Physical sciences topic list of research papers
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Pion in a box
Abstract The residual mass of the pion in a finite spatial box at vanishing quark masses, the mass gap, is computed with two flavors of dynamical clover fermions. The result is compared with predictions of chiral perturbation theory in the δ regime. ...
2010 / W. Bietenholz, M. Göckeler, R. Horsley, Y. Nakamura, D. Pleiter, et al. -
Curvaton reheating in tachyonic inflationary models
Abstract The curvaton reheating in a tachyonic inflationary universe model with an exponential potential is studied. We have found that the energy density in the kinetic epoch, has a complicated dependencies of the scale factor. For different...
2005 / Cuauhtemoc Campuzano, Sergio del Campo, Ramón Herrera -
Relativistic description of BCS–BEC crossover in nuclear matter
Abstract We study theoretically the di-neutron spatial correlations and the crossover from superfluidity of neutron Cooper pairs in the S 0 ...
2009 / Bao Yuan Sun, Hiroshi Toki, Jie Meng -
Classicality of the primordial perturbations
Abstract We show that during inflation, a quantum fluctuation becomes classical at all orders if it becomes classical at first order. Implications are discussed.
2008 / David H. Lyth, David Seery -
U(3)-flavor nonet scalar as an origin of the flavor mass spectra
Abstract According to an idea that the quark and lepton mass spectra originate in a VEV structure of a U(3)-flavor nonet scalar Φ, the mass spectra of the down-quarks and charged leptons are investigated. The U(3) flavor symmetry is spontaneously...
2008 / Yoshio Koide -
First observation of 14F
Abstract We measured the excitation function for 13O+p elastic scattering to obtain data on the unknown 14F nucleus. The ground state and several low-lying excited states in 14F were observed and spin/parity assignments were made. 14F appears to be...
2010 / V.Z. Goldberg, B.T. Roeder, G.V. Rogachev, G.G. Chubarian, E.D. Johnson, et al. -
Modulated inflation
Abstract We have studied modulated inflation that generates curvature perturbation from light-field fluctuation. As discussed in previous works, even if the fluctuation of the inflaton itself does not generate the curvature perturbation, fluctuation ...
2008 / Tomohiro Matsuda -
The non-commutative U(N) Kalb–Ramond theory
Abstract We present the non-commutative extension of the U(N) Cremmer–Scherk–Kalb–Ramond theory, displaying its differential form and gauge structures. The Seiberg–Witten map of the model is also constructed up to 0(θ 2). ...
2004 / Ricardo Amorim, Cristine N Ferreira, Cresus F.L Godinho -
Sensitivity of the EDELWEISS WIMP search to spin-dependent interactions
Abstract The EDELWEISS Collaboration is searching for WIMP dark matter using natural Ge cryogenic detectors. The whole data set of the first phase of the experiment contains a fiducial exposure of 4.8 kg day on 73Ge, the naturally present (7.8%),...
2005 / A. Benoit, L. Bergé, J. Blümer, A. Broniatowski, B. Censier, et al. -
Incompressibility of strange matter
Abstract Strange stars (ReSS) calculated from a realistic equation of state (EOS), that incorporate chiral symmetry restoration as well as deconfinement at high density [Phys. Lett. B 438 (1998) 123; Phys. Lett. B 447 (1999) 352, Addendum; Phys....
2004 / Monika Sinha, Manjari Bagchi, Jishnu Dey, Mira Dey, Subharthi Ray, et al. -
Search for the G-parity irregular term in weak nucleon currents extracted from mirror beta decays in the mass 8 system
Abstract The alignment correlation terms in the β-ray angular distributions from purely spin aligned 8Li and 8B have been measured to search for the G-parity violating induced tensor term g ...
2008 / T. Sumikama, K. Matsuta, T. Nagatomo, M. Ogura, T. Iwakoshi, et al. -
Large N flavor β-functions: A recap
Abstract β-Functions for abelian and nonabelian gauge theories are studied in the regime where the large N flavor expansion is applicable. The first nontrivial order in the 1 / ...
2010 / B. Holdom -
Cosmological unparticle correlators
Abstract We introduce and study an extension of the correlator of unparticle matter operators in a cosmological environment. Starting from FRW spaces we specialize to a de Sitter space–time and derive its inflationary power spectrum which we find to ...
2008 / G.L. Alberghi, A.Yu. Kamenshchik, A. Tronconi, G.P. Vacca, G. Venturi -
Supersymmetric leptogenesis and the gravitino bound
Abstract Supersymmetric thermal leptogenesis with a hierarchical right-handed neutrino mass spectrum requires the mass of the lightest right-handed neutrino to be heavier than about 109 GeV. This is in conflict with the upper bound on the reheating...
2008 / G.F. Giudice, L. Mether, A. Riotto, F. Riva -
CP-violating asymmetry in chargino decay into neutralino and W boson
Abstract In the MSSM with complex parameters, loop corrections to χ ˜ i ...
2005 / H. Eberl, T. Gajdosik, W. Majerotto, B. Schraußer -
Instability of holographic dark energy models
Abstract We investigate the difference between holographic dark energy, Chaplygin gas, and tachyon model with constant potential. For this purpose, we examine their squared speeds of sound which are evaluated to zeroth order in perturbation theory...
2007 / Yun Soo Myung -
Quark coalescence for charmed mesons in ultrarelativistic heavy-ion collisions
Abstract We investigate effects of charm-quark interactions in a quark–gluon plasma on the production of D and J / ψ mesons in high-energy heavy-ion...
2004 / V. Greco, C.M. Ko, R. Rapp -
Systematics of antimagnetic rotation in even–even Cd isotopes
Abstract A model based on classical particle plus rotor has been used to explore the underlying systematics of even–even Cd isotopes and a self consistent picture for the observed behaviors of 106, 108, 110Cd has been reported. This systematic study ...
2010 / Santosh Roy, S. Chattopadhyay, Pradip Datta, S. Pal, S. Bhattacharya, et al. -
Fisher zeros in the Kallen–Lehmann approach to 3D Ising model
Abstract The distribution of the Fisher zeros in the Kallen–Lehmann approach to three-dimensional Ising model is studied. It is argued that the presence of a non-trivial angle (a cusp) in the distribution of zeros in the complex temperatures plane...
2008 / Marco Astorino, Fabrizio Canfora, Gaston Giribet -
Technifermion representations and precision electroweak constraints
Abstract We discuss the selection of fermion representations in technicolor models with a view toward minimizing technicolor contributions to the precision electroweak S parameter. We present and analyze models that involve one technifermion ...
2005 / Neil D. Christensen, Robert Shrock