Publications (113)
Creation of macroscopic superposition states from arrays of Bose-Einstein condensates
J. A. Dunningham, K. Burnett, R. Roth +1
We consider how macroscopic quantum superpositions may be created from arrays of Bose-Einstein condensates. We study a system of three condensates in Fock states, all with the same…
Depletion forces near curved surfaces
R. Roth, B. G"otzelmann, S. Dietrich
Based on density functional theory the influence of curvature on the depletion potential of a single big hard sphere immersed in a fluid of small hard spheres with packing fraction…
Microscopic theory of solvent mediated long range forces: influence of wetting
A. J. Archer, R. Evans, R. Roth
We show that a general density functional approach for calculating the force between two big particles immersed in a solvent of smaller ones can describe systems that exhibit fluid…
Non-analytic curvature contributions to solvation free energies: influence of drying
R. Evans, J. R. Henderson, R. Roth
We investigate the solvation of a hard spherical cavity, of radius , immersed in a fluid for which the interparticle forces are short ranged. For thermodynamic states lying clos…
Prediction for a four-neutron resonance
A. M. Shirokov, G. Papadimitriou, A. I. Mazur +3
We utilize various {\em ab initio} approaches to search for a low-lying resonance in the four-neutron () system using the JISP16 realistic interaction. Our most accurate p…
Di-boson Production beyond NLO QCD and Anomalous Couplings
F. Campanario, M. Rauch, R. Roth +2
In these proceedings, we review results for several di-boson production processes beyond NLO QCD at high transverse momenta using the VBFNLO Monte-Carlo program together with the L…
Solvent mediated interactions close to fluid-fluid phase separation: microscopic treatment of bridging in a soft core fluid
A. J. Archer, R. Evans, R. Roth +1
Using density functional theory we calculate the density profiles of a binary solvent adsorbed around a pair of big solute particles. All species interact via repulsive Gaussian po…
Unitary Correlation Operator Method and Similarity Renormalization Group: Connections and Differences
R. Roth, S. Reinhardt, H. Hergert
We discuss relations and differences between two methods for the construction of unitarily transformed effective interactions, the Similarity Renormalization Group (SRG) and Unitar…
Giant Resonances based on Unitarily Transformed Two-Nucleon plus Phenomenological Three-Nucleon Interactions
A. Günther, P. Papakonstantinou, R. Roth
We investigate giant resonances of spherical nuclei on the basis of the Argonne V18 potential after unitary transformation within the Similarity Renormalization Group or the Unitar…
From chiral NN(N) interactions to giant and pygmy resonances via extended RPA
P. Papakonstantinou, R. Trippel, R. Roth
The properties of giant and pygmy resonances are calculated starting from chiral two-and three-nucleon interactions. The aim is to assess the predictive power of modern Hamiltonian…
Nuclear Structure and Response based on Correlated Realistic NN Interactions
P. Papakonstantinou, R. Roth, H. Hergert +1
Starting from the Argonne V18 nucleon-nucleon (NN) interaction and using the Unitary Correlation Operator Method, a correlated interaction v_UCOM has been constructed, which is sui…
Electromechanical Reliability Testing of Three-Axial Silicon Force Sensors
S. Spinner, J. Bartholomeyczik, B. Becker +6
This paper reports on the systematic electromechanical characterization of a new three-axial force sensor used in dimensional metrology of micro components. The siliconbased sensor…
Realistic Interactions and Configuration Mixing in Fermionic Molecular Dynamics
T. Neff, H. Feldmeier, R. Roth +1
In Fermionic Molecular Dynamics the occurrence of multifragmentation depends strongly on the intrinsic structure of the many-body state. Slater determinants with narrow single-part…
Isospin properties of electric dipole excitations in 48Ca
V. Derya, D. Savran, J. Endres +12
Two different experimental approaches were combined to study the electric dipole strength in the doubly-magic nucleus 48Ca below the neutron threshold. Real-photon scattering exper…
Multiphase coexistence in polydisperse colloidal mixtures
C. Grodon, R. Roth
We study the phase behavior of mixtures of monodisperse colloidal spheres with a depletion agent which can have arbitrary shape and can possess a polydisperse size or shape distrib…
The Twist Mode in Atomic Fermi Gases
X. Vinas, R. Roth, P. Schuck +1
The quantum-kinetic energy of a finite number of trapped fermionic atoms provides a restoring force for shear motion due to a distortion of the momentum distribution. In analogy to…
Ab Initio Multi-Reference In-Medium Similarity Renormalization Group Calculations of Even Calcium and Nickel Isotopes
H. Hergert, S. K. Bogner, T. D. Morris +4
We use the newly developed Multi-Reference In-Medium Similarity Renormalization Group to study all even isotopes of the calcium and nickel isotopic chains, based on two- plus three…
The Unitary Correlation Operator Method from a Similarity Renormalization Group Perspective
H. Hergert, R. Roth
We investigate how the Unitary Correlation Operator Method (UCOM), developed to explicitly describe the strong short-range central and tensor correlations present in the nuclear ma…
Matrix Elements and Few-Body Calculations within the Unitary Correlation Operator Method
R. Roth, H. Hergert, P. Papakonstantinou +2
We employ the Unitary Correlation Operator Method (UCOM) to construct correlated, low-momentum matrix elements of realistic nucleon-nucleon interactions. The dominant short-range c…
Structure of the lightest tin isotopes
T. D. Morris, J. Simonis, S. R. Stroberg +7
We link the structure of nuclei around Sn, the heaviest doubly magic nucleus with equal neutron and proton numbers (), to nucleon-nucleon () and three-nucleon (…
Hard spheres at a planar hard wall: Simulations and density functional theory
R. L. Davidchack, B. B. Laird, R. Roth
Hard spheres are a central and important model reference system for both homogeneous and inhomogeneous fluid systems. In this paper we present new high-precision molecular-dynamics…
Superfluidity and Interference Pattern of Ultracold Bosons in Optical Lattices
R. Roth, K. Burnett
We present a study of the superfluid properties of atomic Bose gases in optical lattice potentials using the Bose-Hubbard model. To do this, we use a microscopic definition of the…
Binary hard-sphere fluids near a hard wall
R. Roth, S. Dietrich
By using the Rosenfeld density functional we determine the number density profiles of both components of binary hard-sphere fluids close to a planar hard wall as well as the corres…
ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations
A. Kokori, A. Tsiaras, B. Edwards +214
The ExoClock project has been created with the aim of increasing the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides o…
Damping of the isovector giant dipole resonance in Ca
J. Carter, L. M. Donaldson, H. Fujita +21
The fine structure of the IsoVector Giant Dipole Resonance (IVGDR) in the doubly-magic nuclei Ca observed in inelastic proton scattering experiments under is us…
Giant Resonances using Correlated Realistic Interactions: The Case for Second RPA
P. Papakonstantinou, R. Roth
Lately we have been tackling the problem of describing nuclear collective excitations starting from correlated realistic nucleon-nucleon (NN) interactions. The latter are construct…
Bose-Fermi mixtures in 1D optical superlattices
F. Schmitt, M. Hild, R. Roth
The zero temperature phase diagram of binary boson-fermion mixtures in two-colour superlattices is investigated. The eigenvalue problem associated with the Bose-Fermi-Hubbard Hamil…
The nuclear force imprints revealed on the elastic scattering of protons with C
A. Kumar, R. Kanungo, A. Calci +26
How does nature hold together protons and neutrons to form the wide variety of complex nuclei in the universe? Describing many-nucleon systems from the fundamental theory of quantu…
Lateral vibration effects in atomic-scale friction
R. Roth, O. Y. Fajardo, J. J. Mazo +2
The influence of lateral vibrations on the stick-slip motion of a nanotip elastically pulled on a flat crystal surface is studied by atomic force microscopy (AFM) measurements on a…
Uncertainties in ab initio nuclear structure calculations with chiral interactions
P. Maris, H. Le, A. Nogga +2
We present theoretical ground state energies and their uncertainties for p-shell nuclei obtained from chiral effective field theory internucleon interactions as a function of chira…
Variational and DMRG studies of the Frustrated Antiferromagnetic Heisenberg S=1 Quantum Spin Chain
A. Kolezhuk, R. Roth, U. Schollwoeck
We study a frustrated antiferromagnetic isotropic Heisenberg chain using a variational ansatz and the DMRG. At , there is a disorder point of the second kind,…
The dipole strength distribution of He and decay characteristics
C. Lehr, T. Aumann, M. Duer +91
The weak binding and spatially extended neutron densities characteristic of drip-line nuclei give rise to a distinctive low-energy dipole response. The drip-line nucleus He is…
Hartree-Fock and Many-Body Perturbation Theory with Correlated Realistic NN-Interactions
R. Roth, P. Papakonstantinou, N. Paar +3
We employ correlated realistic nucleon-nucleon interactions for the description of nuclear ground states throughout the nuclear chart within the Hartree-Fock approximation. The cru…
Isoscalar and neutron modes in the E1 spectra of Ni isotopes and the relevance of shell effects and the continuum
P. Papakonstantinou, H. Hergert, R. Roth
We study theoretically the electric dipole transitions of even Ni isotopes at low energies, using the self-consistent quasi-particle random-phase approximation (RPA) with the D1S G…
Treatment of the Intrinsic Hamiltonian in Particle-Number Nonconserving Theories
H. Hergert, R. Roth
We discuss the implications of using an intrinsic Hamiltonian in theories without particle-number conservation, e.g., the Hartree-Fock-Bogoliubov approximation, where the Hamiltoni…
Fine structure of the isoscalar giant quadrupole resonance in 40Ca due to Landau damping?
I. Usman, Z. Buthelezi, J. Carter +13
The fragmentation of the Isoscalar Giant Quadrupole Resonance (ISGQR) in 40Ca has been investigated in high energy-resolution experiments using proton inelastic scattering at E_p =…
Depletion potential in hard-sphere mixtures: theory and applications
R. Roth, R. Evans, S. Dietrich
We present a versatile density functional approach (DFT) for calculating the depletion potential in general fluid mixtures. In contrast to brute force DFT, our approach requires on…
Reply to Comment on ``Ab Initio Study of 40-Ca with an Importance Truncated No-Core Shell Model''
R. Roth, P. Navratil
We respond to Comment on our recent letter (Phys.Rev.Lett.99:092501,2007) by Dean et al (arXiv:0709.0449).
Correlation energies in the random phase approximation using realistic interactions
C. Barbieri, N. Paar, R. Roth +1
The self-consistent random phase approximation (RPA) based on a correlated realistic nucleon-nucleon interaction is used to evaluate correlation energies in closed-shell nuclei bey…
Nuclear collective excitations using correlated realistic interactions: the role of explicit RPA correlations
P. Papakonstantinou, R. Roth, N. Paar
We examine to which extent correlated realistic nucleon-nucleon interactions, derived within the Unitary Correlation Operator Method (UCOM), can describe nuclear collective motion…
Stability of Trapped Ultracold Fermi Gases Using Effective s- and p-Wave Contact-Interactions
R. Roth, H. Feldmeier
The stability of trapped dilute Fermi gases against collapse towards large densities is studied. A hermitian effective contact-interaction for all partial waves is derived, which i…
Charge radii of Ni reveal a surprisingly similar behavior at in Ca and Ni isotopes
F. Sommer, K. König, D. M. Rossi +24
Nuclear charge radii of Ni were measured by collinear laser spectroscopy. The obtained information completes the behavior of the charge radii at the shell closure of the…
In-Medium Similarity Renormalization Group with Chiral Two- Plus Three-Nucleon Interactions
H. Hergert, S. K. Bogner, S. Binder +4
We use the recently proposed In-Medium Similarity Renormalization Group (IM-SRG) to carry out a systematic study of closed-shell nuclei up to $\nuc{Ni}{56}$, based on chiral two- p…
Origin of fine structure of the giant dipole resonance in sd-shell nuclei
R. W. Fearick, B. Erler, H. Matsubara +4
A set of high resolution zero-degree inelastic proton scattering data on 24Mg, 28Si, 32S, and 40Ca provides new insight into the long-standing puzzle of the origin of fragmentation…
Microscopic two-nucleon overlaps and knockout reactions from C
E. C. Simpson, P. Navrátil, R. Roth +1
The nuclear structure dependence of direct reactions that remove a pair of like or unlike nucleons from a fast C projectile beam are considered. Specifically, we study the d…
Morphological Thermodynamics of Fluids: Shape Dependence of Free Energies
P. -M. König, R. Roth, K. R. Mecke
We examine the dependence of a thermodynamic potential of a fluid on the geometry of its container. If motion invariance, continuity, and additivity of the potential are fulfilled,…
ExoClock Project IV: A homogeneous catalogue of 620 updated exoplanet ephemerides
A. Kokori, A. Tsiaras, G. Pantelidou +323
The ExoClock project is an open platform aiming to monitor exoplanets by integrating observations from space and ground based telescopes. This study presents an updated catalogue o…
Ab initio calculations of reactions with light nuclei
S. Quaglioni, G. Hupin, A. Calci +2
An {\em ab initio} (i.e., from first principles) theoretical framework capable of providing a unified description of the structure and low-energy reaction properties of light nucle…
Dynamic structure factor of ultracold Bose and Fermi gases in optical lattices
R. Roth, K. Burnett
We investigate the dynamic structure factor of atomic Bose and Fermi gases in one-dimensional optical lattices at zero temperature. The focus is on the generic behaviour of S(k,ome…
Inhomogeneous hard-sphere mixtures: Manifestations of structural crossover
C. Grodon, M. Dijkstra, R. Evans +1
We study various manifestations of structural crossover in the properties of a binary mixture of hard-spheres. For homogeneous mixtures that are sufficiently asymmetric, there is a…
Time- and energy-resolved effects in the boron-10 based Multi-Grid and helium-3 based thermal neutron detectors
A. Backis, A. Khaplanov, R. Al Jebali +33
The boron-10 based Multi-Grid detector is being developed as an alternative to helium-3 based neutron detectors. At the European Spallation Source, the detector will be used for ti…
Depletion potentials near geometrically structured substrates
P. Bryk, R. Roth, M. Schoen +1
Using the recently developed so-called White Bear version of Rosenfeld's Fundamental Measure Theory we calculate the depletion potentials between a hard-sphere colloidal particle i…
VBFNLO: A parton level Monte Carlo for processes with electroweak bosons -- Manual for Version 3.0
J. Baglio, F. Campanario, T. Chen +11
VBFNLO is a flexible parton level Monte Carlo program for the simulation of vector boson fusion (VBF), QCD-induced single and double vector boson production plus two jets, and doub…
Light nuclei with semilocal momentum-space regularized chiral interactions up to third order
P. Maris, E. Epelbaum, R. J. Furnstahl +17
We present a systematic investigation of few-nucleon systems and light nuclei using the current LENPIC interactions comprising semilocal momentum-space regularized two- and three-n…
The LOFAR Two-Metre Sky Survey (LoTSS): VI. Optical identifications for the second data release
M. J. Hardcastle, M. A. Horton, W. L. Williams +49
The second data release of the LOFAR Two-Metre Sky Survey (LoTSS) covers 27% of the northern sky, with a total area of deg. The high angular resolution of LOFAR wi…
Quasiparticle Random Phase Approximation with Interactions from the Similarity Renormalization Group
H. Hergert, P. Papakonstantinou, R. Roth
We have developed a fully consistent framework for calculations in the Quasiparticle Random Phase Approximation (QRPA) with interactions from the Similarity Renormalization Gr…
Collective excitations in the Unitary Correlation Operator Method and relativistic QRPA studies of exotic nuclei
N. Paar, P. Papakonstantinou, H. Hergert +1
The collective excitation phenomena in atomic nuclei are studied in two different formulations of the Random Phase Approximation (RPA): (i) RPA based on correlated realistic nucleo…
Depletion potential in hard sphere fluids
B. Götzelmann, R. Roth, S. Dietrich +2
A versatile new approach for calculating the depletion potential in a hard sphere mixture is presented. This is valid for any number of components and for arbitrary densities. We d…
Generalized effective depletion potentials
A. A. Louis, R. Roth
We propose that the behavior of asymmetric binary fluid mixtures with a large class of attractive or repulsive interparticle interactions can be understood by mapping onto effectiv…
Few- and many-nucleon systems with semilocal coordinate-space regularized chiral two- and three-body forces
E. Epelbaum, J. Golak, K. Hebeler +12
We present a complete calculation of nucleon-deuteron scattering as well as ground and low-lying excited states of light nuclei in the mass range A=3-16 up through next-to-next-to-…
Ab Initio study of neutron drops with chiral Hamiltonians
H. D. Potter, S. Fischer, P. Maris +5
We report ab initio calculations for neutron drops in a 10 MeV external harmonic-oscillator trap using chiral nucleon-nucleon plus three-nucleon interactions. We present total bind…
From nucleons to nuclei to fusion reactions
S. Quaglioni, P. Navratil, R. Roth +1
Nuclei are prototypes of many-body open quantum systems. Complex aggregates of protons and neutrons that interact through forces arising from quantum chromo-dynamics, nuclei exhibi…
Low-energy dipole strength and the critical case of 48Ca
P. Papakonstantinou, H. Hergert, V. Yu. Ponomarev +1
Recent theoretical work has not led to a consensus regarding the nature of the low-energy E1 strength in the 40,44,48Ca isotopes, for which high-resolution (gamma,gamma') data exis…
Phase diagram of trapped degenerate Fermi gases including effective s- and p-wave interactions
R. Roth, H. Feldmeier
The influence of s- and p-wave interactions on trapped degenerate one and two-component Fermi gases is investigated. The energy functional of a multicomponent Fermi gas is derived…
Zero- and finite-temperature electromagnetic strength distributions in closed- and open-shell nuclei from first principles
Y. Beaujeault-Taudière, M. Frosini, J. -P. Ebran +3
Ab initio approaches to the nuclear many-body problem have seen their reach considerably extended over the past decade. However, collective excitations have been scarcely addressed…
No-Core Shell Model for Nuclear Systems with Strangeness
D. Gazda, J. Mareš, P. Navrátil +2
We report on a novel ab initio approach for nuclear few- and many-body systems with strangeness. Recently, we developed a relevant no-core shell model technique which we successful…
Quantum phases of atomic boson-fermion mixtures in optical lattices
R. Roth, K. Burnett
The zero-temperature phase diagram of a binary mixture of bosonic and fermionic atoms in an one-dimensional optical lattice is studied in the framework of the Bose-Fermi-Hubbard mo…
Response of Bose gases in time-dependent optical superlattices
M. Hild, F. Schmitt, R. Roth
The dynamic response of ultracold Bose gases in one-dimensional optical lattices and superlattices is investigated based on exact numerical time evolutions in the framework of the…
C properties with evolved chiral three-nucleon interactions
P. Maris, J. P. Vary, A. Calci +3
We investigate selected static and transition properties of C using ab initio No-Core Shell Model (NCSM) methods with chiral two- and three-nucleon interactions. We adopt th…
Large-scale second RPA calculations with finite-range interactions
P. Papakonstantinou, R. Roth
Second RPA (SRPA) calculations of nuclear response are performed and analyzed. Unlike in most other SRPA applications, the ground state, approximated by the Hartree-Fock (HF) groun…
Entropic torque
R. Roth, R. van Roij, D. Andrienko +2
Quantitative predictions are presented of a depletion-induced torque and force acting on a single colloidal hard rod immersed in a solvent of hard spheres close to a planar hard wa…
Depletion forces between non-spherical objects
P. -M. König, R. Roth, S. Dietrich
We extend the insertion approach for calculating depletion potentials to the case of non-spherical solutes. Instead of a brute-force calculation we suggest to employ the recently d…
Release Note - VBFNLO 2.7.0
J. Baglio, J. Bellm, F. Campanario +11
VBFNLO is a flexible parton level Monte Carlo program for the simulation of vector boson fusion (VBF), double and triple vector boson (plus jet) production as well as QCD-induced s…
Stability of nanoparticle laden aerosol liquid droplets
A. J. Archer, B. D. Goddard, R. Roth
We develop a model for the thermodynamics and evaporation dynamics of aerosol droplets of a liquid such as water, surrounded by the gas. When the temperature and the chemical poten…
Nuclear properties with semilocal momentum-space regularized chiral interactions beyond N2LO
P. Maris, R. Roth, E. Epelbaum +15
We present a comprehensive investigation of few-nucleon systems as well as light and medium-mass nuclei up to using the current Low Energy Nuclear Physics International Coll…
Wetting at Curved Substrates: Non-Analytic Behavior of Interfacial Properties
R. Evans, R. Roth, P. Bryk
We argue that for complete wetting at a curved substrate (wall) the wall-fluid surface tension is non-analytic in , the curvature of the wall and that the density profile…
Hard-Sphere Fluids in Contact with Curved Substrates
P. Bryk, R. Roth, K. R. Mecke +1
The properties of a hard-sphere fluid in contact with hard spherical and cylindrical walls are studied. Rosenfeld's density functional theory (DFT) is applied to determine the dens…
Electromagnetic properties of O for benchmarking nuclear Hamiltonians
S. Heil, M. Petri, K. Vobig +25
The structure of exotic nuclei provides valuable tests for state-of-the-art nuclear theory. In particular electromagnetic transition rates are more sensitive to aspects of nuclear…
Nonperturbative shell-model interactions from the in-medium similarity renormalization group
S. K. Bogner, H. Hergert, J. D. Holt +5
We present the first ab initio construction of valence-space Hamiltonians for medium-mass nuclei based on chiral two- and three-nucleon interactions using the in-medium similarity…
Ultracold Bosonic Atoms in Disordered Optical Superlattices
R. Roth, K. Burnett
The influence of disorder on ultracold atomic Bose gases in quasiperiodic optical lattices is discussed in the framework of the one-dimensional Bose-Hubbard model. It is shown that…
Role of chiral two-body currents in Li magnetic properties in light of a new precision measurement with the relative self-absorption technique
U. Friman-Gayer, C. Romig, T. Hüther +18
A direct measurement of the decay width of the excited state of Li using the relative self-absorption technique is reported. Our value of $Î_{γ, 0^+_1 \to 1^+_1} = 8.…
Theory of asymmetric non-additive binary hard-sphere mixtures
R. Roth, R. Evans, A. A. Louis
We show that the formal procedure of integrating out the degrees of freedom of the small spheres in a binary hard-sphere mixture works equally well for non-additive as it does for…
Nuclear Structure in the UCOM Framework: From Realistic Interactions to Collective Excitations
R. Roth, H. Hergert, N. Paar +1
The Unitary Correlation Operator Method (UCOM) provides a means for nuclear structure calculations starting from realistic NN potentials. The dominant short-range central and tenso…
Effective s- and p-Wave Contact Interactions in Trapped Degenerate Fermi Gases
R. Roth, H. Feldmeier
The structure and stability of dilute degenerate Fermi gases trapped in an external potential is discussed with special emphasis on the influence of s- and p-wave interactions. In…
Second RPA and correlated realistic interactions
P. Papakonstantinou, R. Roth
We examine the response of closed-shell nuclei using a correlated interaction, derived with the Unitary Correlation Operator Method (UCOM) from the Argonne V18 potential, in second…
Pairing in the Framework of the Unitary Correlation Operator Method (UCOM): Hartree-Fock-Bogoliubov Calculations
H. Hergert, R. Roth
In this first in a series of articles, we apply effective interactions derived by the Unitary Correlation Operator Method (UCOM) to the description of open-shell nuclei, using a se…
Electric structure of shallow D-wave states in Halo EFT
J. Braun, W. Elkamhawy, R. Roth +1
We compute the electric form factors of one-neutron halo nuclei with shallow D-wave states up to next-to-leading order and the E2 transition from the S-wave to the D-wave state up…
Effective forces in colloidal mixtures: from depletion attraction to accumulation repulsion
A. A. Louis, E. Allahyarov, H. Lowen +1
Computer simulations and theory are used to systematically investigate how the effective force between two big colloidal spheres in a sea of small spheres depends on the basic (big…
Frustrated antiferromagnetic quantum spin chains for spin length S > 1
R. Roth, U. Schollwoeck
We investigate frustrated antiferromagnetic Heisenberg quantum spin chains at T=0 for S=3/2 and S=2 using the DMRG method. We localize disorder and Lifshitz points, confirming that…
Fermionic Molecular Dynamics and short range correlations
H. Feldmeier, T. Neff, R. Roth +1
Fermionic Molecular Dynamics (FMD) models a system of fermions by means of many-body states which are composed of antisymmetrized products of single-particle states. These consist…
Systematics of binding energies and radii based on realistic two-nucleon plus phenomenological three-nucleon interactions
A. Günther, R. Roth, H. Hergert +1
We investigate the influence of phenomenological three-nucleon interactions on the systematics of ground-state energies and charge radii throughout the whole nuclear mass range fro…
The Asakura-Oosawa model in the protein limit: the role of many-body interactions
A. Moncho-Jorda, A. A. Louis, P. G. Bolhuis +1
We study the Asakura-Oosawa model in the "protein limit", where the penetrable sphere radius is much greater than the hard sphere radius . The phase behaviour and str…
Short-Range Correlations in He-4 Liquid and Small He-4 Droplets described by the Unitary Correlation Operator Method
R. Roth, H. Feldmeier
The Unitary Correlation Operator Method (UCOM) is employed to treat short-range correlations in both, homogeneous liquid and small droplets of bosonic He-4 atoms. The dominating sh…
Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector
D. de Florian, C. Grojean, F. Maltoni +373
This Report summarizes the results of the activities of the LHC Higgs Cross Section Working Group in the period 2014-2016. The main goal of the working group was to present the sta…
A unitary correlation operator method
H. Feldmeier, T. Neff, R. Roth +1
The short range repulsion between nucleons is treated by a unitary correlation operator which shifts the nucleons away from each other whenever their uncorrelated positions are wit…
Low-energy neutron-deuteron reactions with N3LO chiral forces
J. Golak, R. Skibinski, K. Topolnicki +16
We solve three-nucleon Faddeev equations with nucleon-nucleon and three-nucleon forces derived consistently in the framework of chiral perturbation theory at next-to-next-to-next-t…
Ab initio coupled-cluster and configuration interaction calculations for 16-O using V_UCOM
R. Roth, J. R. Gour, P. Piecuch
Using the ground-state energy of 16-O obtained with the realistic V_UCOM interaction as a test case, we present a comprehensive comparison of different configuration interaction (C…
Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces
S. Binder, A. Calci, E. Epelbaum +17
We apply improved nucleon-nucleon potentials up to fifth order in chiral effective field theory, along with a new analysis of the theoretical truncation errors, to study nucleon-de…
Collective multipole excitations based on correlated realistic nucleon-nucleon interactions
N. Paar, P. Papakonstantinou, H. Hergert +1
We investigate collective multipole excitations for closed shell nuclei from 16O to 208Pb using correlated realistic nucleon -nucleon interactions in the framework of the random ph…
Mean-field instability of trapped dilute boson-fermion mixtures
R. Roth, H. Feldmeier
The influence of boson-boson and boson-fermion interactions on the stability of a binary mixture of bosonic and fermionic atoms is investigated. The density profiles of the trapped…