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22 papers · 1 filter
Encoding folding paths of RNA switches
A. Xayaphoummine, V. Viasnoff, S. Harlepp +1
RNA co-transcriptional folding has long been suspected to play an active role in helping proper native folding of ribozymes and structured regulatory motifs in mRNA untranslated re…
An application of renormalization in Hilbert space at phase transition points in strongly interacting systems
Tarek Khalil, Jean Richert
We introduce an algorithm aimed to reduce the dimensions of Hilbert space. It is used here in order to study the behaviour of low energy states of strongly interacting quantum many…
Modification of streaming potential by precipitation of calcite in a sand-water system: laboratory measurements pH range from 4 to 12
Xavier Guichet, Laurence Jouniaux, Nicole Catel
Spontaneous Potentials associated with volcanic activity are often interpreted by means of the electrokinetic potential, which is usually positive in the flow direction (i.e. Zeta…
Measurement of double beta decay of 100Mo to excited states in the NEMO 3 experiment
R. Arnold, C. Augier, J. Baker +51
The double beta decay of 100Mo to the 0^+_1 and 2^+_1 excited states of 100Ru is studied using the NEMO 3 data. After the analysis of 8024 h of data the half-life for the two-neutr…
A near zero velocity dispersion stellar component in the Canes Venatici dwarf spheroidal galaxy
Rodrigo Ibata, Scott Chapman, Mike Irwin +2
We present a spectroscopic survey of the newly-discovered Canes Venatici dwarf galaxy using the Keck/DEIMOS spectrograph. Two stellar populations of distinct kinematics are found t…
Para-Grassmann Variables and Coherent States
Daniel C. Cabra, Enrique F. Moreno, Adrian Tanasa
The definitions of para-Grassmann variables and q-oscillator algebras are recalled. Some new properties are given. We then introduce appropriate coherent states as well as their du…
Excitations with fractional spin less than 1/2 in frustrated magnetoelastic chains
C. J. Gazza, A. O. Dobry, D. C. Cabra +1
We study the magnetic excitations on top of the plateaux states recently discovered in spin-Peierls systems in a magnetic field. We show by means of extensive density matrix renorm…
Studies of Neutron Stars at Optical/IR Wavelengths
R. P. Mignani, S. Bagnulo, A. De Luca +7
In the last years, optical studies of Isolated Neutron Stars (INSs) have expanded from the more classical rotation-powered ones to other categories, like the Anomalous X-ray Pulsar…
Discovery and analysis of three faint dwarf galaxies and a globular cluster in the outer halo of the Andromeda galaxy
N. F. Martin, R. A. Ibata, M. J. Irwin +5
We present the discovery of three faint dwarf galaxies and a globular cluster in the halo of the Andromeda galaxy (M31), found in our MegaCam survey that spans the southern quadran…
Gaussian Statistics of Fracture Surfaces
Stéphane Santucci, Joachim Mathiesen, Knut Jørgen Måløy +6
We analyse the statistical distribution function for the height fluctuations of brittle fracture surfaces using extensive experimental data sampled on widely different materials an…
The shape and erosion of pebbles
D. J. Durian, H. Bideaud, P. Duringer +2
The shapes of flat pebbles may be characterized in terms of the statistical distribution of curvatures measured along their contours. We illustrate this new method for clay pebbles…
What is in a pebble shape?
D. J. Durian, H. Bideaud, P. Duringer +3
We propose to characterize the shapes of flat pebbles in terms of the statistical distribution of curvatures measured along the pebble contour. This is demonstrated for the erosion…
Signed words and permutations, IV; Fixed and pixed points
Dominique Foata, Guo-Niu Han
The flag-major index "fmaj" and the classical length function "" are used to construct two -analogs of the generating polynomial for the hyperoctahedral group~ by num…
Search for a heavy resonance decaying into a Z+jet final state in p-pbar collisions at sqrt(s) = 1.96 TeV using the D0 detector
D0 Collaboration, V. M. Abazov
We have searched for a heavy resonance decaying into a Z+jet final state in p-pbar collisions at a center of mass energy of 1.96 TeV at the Fermilab Tevatron collider using the D0…
Application of a renormalization algorithm in Hilbert space to the study of many-body quantum systems
Tarek Khalil, Jean Richert
We implement an algorithm which is aimed to reduce the number of basis states spanning the Hilbert space of quantum many-body systems. We test the efficiency of the procedure by wo…
The nucleon axial-vector coupling beyond one loop
Véronique Bernard, Ulf-G. Meißner
We analyze the nucleon axial-vector coupling to two loops in chiral perturbation theory. We show that chiral extrapolations based on this representation require lattice data with p…
Existence of long-lived isomeric states in naturally-occurring neutron-deficient Th isotopes
A. Marinov, I. Rodushkin, Y. Kashiv +7
Evidence for the existence of long-lived neutron-deficient isotopes has been found in a study of naturally-occurring Th using iductively coupled plasma-sector field mass spectromet…
Search for R-parity violating supersymmetry via the LLE couplings lambda_{121}, lambda_{122} or lambda_{133} in ppbar collisions at sqrt(s)=1.96 TeV
D0 Collaboration, V. M. Abazov
A search for gaugino pair production with a trilepton signature in the framework of R-parity violating supersymmetry via the couplings lambda_121, lambda_122, or lambda_133 is pres…
K^L_{mu3} decay: A Stringent Test of Right-Handed Quark Currents
Véronique Bernard, Micaela Oertel, Emilie Passemar +1
Clean tests of a small admixture of right-handed quark currents directly coupled to the standard W are still lacking. We show that such non-standard couplings can be significantly…
Rapidity dependence of high p_T suppression at sqrt{s_{NN}}=62.4{GeV}
I. Arsene, I. G. Bearden, D. Beavis +49
We present measurements of charged hadron p_T spectra from Au+Au collisions at sqrt(snn)=62.4 GeV for pseudorapidities eta=0, eta=1 and eta=3.2. Around midrapidity (eta=0, eta=1) w…
Search for Pair Production of Second Generation Scalar Leptoquarks in ppbar Collisions at sqrt(s)=1.96 TeV
D0 Collaboration, V. Abazov
We report on a search for the pair production of second generation scalar leptoquarks (LQ_2) in ppbar collisions at the center-of-mass energy sqrt(s) = 1.96 TeV, using data corresp…
Quantum dimer phases in a frustrated spin ladder: Effective field theory approach and exact diagonalization
Temo Vekua, Andreas Honecker
The phase diagram of a frustrated S=1/2 antiferromagnetic spin ladder with additional next-nearest neighbor exchanges, both diagonal and inchain, is studied by a weak-coupling effe…