Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And ApplicationsIT1.4k papers
- Centre National de la Recherche ScientifiqueFR1.3k papers
- University of PisaIT1.2k papers
- Sapienza University of RomeIT1.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT1.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT1.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT1.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT1.1k papers
- Rutherford Appleton LaboratoryGB1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1k papers
- University of BolognaIT1k papers
32 papers · 1 filter
A class of two-dimensional Yang-Mills vacua and their relation to the non-linear sigma model
A. Bassetto, G. Nardelli
Classical vacuum - pure gauge - solutions of Euclidean two-dimensional SU(2) Yang-Mills theories are studied. Topologically non-trivial vacua are found in a class of gauge group el…
Excited States in 52Fe and the Origin of the Yrast Trap at I=12+
C. A. Ur, D. Bucurescu, S. M. Lenzi +15
Excited states in 52Fe have been determined up to spin 10\hbar in the reaction 28Si + 28Si at 115 MeV by using γ-ray spectroscopy methods at the GASP array. The excitation energy o…
Anomalous fluctuations of the condensate in interacting Bose gases
S. Giorgini, L. P. Pitaevskii, S. Stringari
We find that the fluctuations of the condensate in a weakly interacting Bose gas confined in a box of volume follow the law . This anomalous behaviour ari…
Quantum Correction to the Entropy of the (2+1)-Dimensional Black Hole
A. A. Bytsenko, L. Vanzo, S. Zerbini
The thermodynamic properties of the (2+1)-dimensional non-rotating black hole of Bañados, Teitelboim and Zanelli are discussed. The first quantum correction to the Bekenstein-Hawki…
Search for tunnelling centres in Lennard-Jones clusters
G. Daldoss, O. Pilla, G. Viliani
We report on numerical procedures for, and preliminary results on the search for, tunnelling centres in Lennard-Jones clusters, seen as simple model systems of glasses. Several of…
One-loop Effective Potential for a Fixed Charged Self-interacting Bosonic Model at Finite Temperature with its Related Multiplicative Anomaly
Emilio Elizalde, Antonio Filippi, Luciano Vanzo +1
The one-loop partition function for a charged self-interacting Bose gas at finite temperature in D-dimensional spacetime is evaluated within a path integral approach making use of…
Rotating Topological Black Holes
D. Klemm, V. Moretti, L. Vanzo
A class of metrics solving Einstein's equations with negative cosmological constant and representing rotating, topological black holes is presented. All such solutions are in the P…
Thermodynamics of scalar fields in Kerr's geometry
Guido Cognola
The one-loop contributions to the entropy for a massive scalar field in a Kerr black hole are investigated using an approximation of the metric, which, after a conformal transforma…
Frequency shift and mode coupling in the nonlinear dynamics of a Bose condensed gas
F. Dalfovo, C. Minniti, L. P. Pitaevskii
We investigate the behavior of large amplitude oscillations of a trapped Bose-condensed gas of alkali atoms at zero temperature, by solving the equations of hydrodynamics for colle…
Landau damping in dilute Bose gases
L. P. Pitaevskii, S. Stringari
Landau damping in weakly interacting Bose gases is investigated by means of perturbation theory. Our approach points out the crucial role played by Bose-Einstein condensation and y…
Towards an unified picture of constituent and current quarks
Sergio Scopetta, Vicente Vento, Marco Traini
Using a simple picture of the constituent quark as a composite system of point-like partons, we construct the parton distributions by a convolution between constituent quark moment…
The Schwinger Model in Light-Cone Gauge
A. Bassetto, G. Nardelli, E. Vianello
The Schwinger model, defined in the space interval , with (anti)periodic boundary conditions, is canonically quantized in the light-cone gauge by means of e…
Photodisintegration of the Three-Nucleon Systems and their Polarizabilities
V. D. Efros, W. Leidemann, G. Orlandini
The total photodisintegration cross sections of three-body nuclei are calculated with semirealistic NN potentials below pion threshold. Full final state interaction with Coulomb fo…
Collective and single particle excitations of a trapped Bose gas
F. Dalfovo, S. Giorgini, M. Guilleumas +2
The density of states of a Bose-condensed gas confined in a harmonic trap is investigated. The predictions of Bogoliubov theory are compared with the ones of Hartree-Fock theory an…
Searching the Higgs with the Neurochip TOTEM
S. Dusini, F. Ferrari, I. Lazzizzera +3
We show that neural network classifiers can be helpful in discriminating Higgs production events from the huge background at LHC, assuming the case of a mass value G…
ζfunction renormalization of one-loop stress tensors in curved spacetime: a check on the method in the conical manifold and other cases
V. Moretti
A previously introduced method to renormalize the one-loop stress tensor and the one-loop vacuum fluctuations in a curved background by a direct local -function approach is chec…
Is there a Pronounced Giant Dipole Resonance in ^4He?
V. D. Efros, W. Leidemann, G. Orlandini
A four-nucleon calculation of the total ^4He photodisintegration cross section is performed. The full final-state interaction is taken into account for the first time. This is achi…
Electromagnetic fields in Schwarzschild and Reissner-Nordström geometry. Quantum corrections to the black hole entropy
Guido Cognola, Paola Lecca
Using standard coordinates, the Maxwell equations in the Reissner-Nordström geometry are written in terms of a couple of scalar fields satisfying Klein-Gordon like equations. The d…
Low-frequency Raman scattering in model disordered solids: percolators above threshold
O. Pilla, G. Viliani, R. DellAnna +1
The Raman coupling coefficients of site- and bond-percolators at concentration higher than percolation threshold are computed for two scattering mechanisms: Bond Polarizability (BP…
Role of Neural Networks in the Search of the Higgs Boson at LHC
T. Maggipinto, G. Nardulli, S. Dusini +5
We show that neural network classifiers can be helpful to discriminate Higgs production from background at LHC in the Higgs mass range M= 200 GeV. We employ a common feed-forward n…
zeta-function regularization and one-loop renormalization of field fluctuations in curved space-times
Valter Moretti, Devis Iellici
A method to regularize and renormalize the fluctuations of a quantum field in a curved background in the -function approach is presented. The method produces finite quantities d…
Black holes with unusual topology
L. Vanzo
The Einstein's equations with a negative cosmological constant admit solutions which are asymptotically anti-de Sitter space. Matter fields in anti-de Sitter space can be in stable…
Density of Superfluid Helium Droplets
Jan Harms, J. Peter Toennies, Franco Dalfovo
The classical integral cross sections of large superfluid 4He_N droplets and the number of atoms in the droplets (N=10^3-10^4) have been measured in molecular beam scattering exper…
Massive scalar field near a cosmic string
Devis Iellici
The function of a massive scalar field near a cosmic string is computed and then employed to find the vacuum fluctuation of the field. The vacuum expectation value of the energ…