Physical sciences topic list of research papers
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Conformal invariance of partially massless higher spins
Abstract We show that there exist conformally invariant theories for all spins in d = 4 de Sitter space, namely the partially massless models with higher...
2004 / S. Deser, A. Waldron -
Neutron β-decay, Standard Model and cosmology
Abstract The precise value of the neutron lifetime is of fundamental importance to particle physics and cosmology. The neutron lifetime recently obtained, 878.5 ± ...
2007 / A.P. Serebrov -
Geometrical origin of entropy during inflation from the STM theory of gravity
Abstract Using a recently introduced 5D Riemann flat metric, we investigate the possibility of introducing dissipation in the dynamics of the inflaton field on an effective 4D FRW metric, in the framework of the STM theory of gravity. ...
2008 / Jesús Romero, Mauricio Bellini -
Lowering the critical temperature with eight-quark interactions
Abstract It is shown that eight-quark interactions, which are needed to stabilize the ground state of the combined three flavor Nambu–Jona-Lasinio and 't Hooft Lagrangians, play also an important role in determining the critical temperature at which ...
2007 / A.A. Osipov, B. Hiller, J. Moreira, A.H. Blin, J. da Providência -
Modified dispersion relations and (A)dS Schwarzschild black holes
Abstract In this Letter we investigate the impact of modified dispersion relations (MDR) on (Anti)de Sitter–Schwarzschild black holes. In this context we find the temperature of black holes can be derived with important corrections. In particular...
2008 / Xin Han, Huarun Li, Yi Ling -
Solar system effects in Schwarzschild–de Sitter space–time
Abstract The Schwarzschild–de Sitter space–time describes the gravitational field of a spherically symmetric mass in a universe with cosmological constant Λ. Based on this space–time we calculate Solar system effects like gravitational redshift,...
2006 / Valeria Kagramanova, Jutta Kunz, Claus Lämmerzahl -
Thermal fluctuations in viscous cosmology
Abstract In this Letter we investigate the power spectrum of thermal fluctuations in very early stage of viscous cosmology. When the state parameter as well as the viscous coefficient of a barotropic fluid is properly chosen, a scale invariant...
2010 / Wei-Jia Li, Yi Ling, Jian-Pin Wu, Xiao-Mei Kuang -
Revisiting the cosmological constraints on the interacting dark energy models
Abstract In this work, we consider the cosmological constraints on the interacting dark energy models. We generalize the models considered previously by Guo et al. (2007) [1], Costa and Alcaniz (2010) [2], and try to discuss two general types of...
2010 / Hao Wei -
A not so little Higgs?
Abstract Most recent models assuming the Higgs boson is a pseudo-Nambu–Goldstone boson (pNGb) are motivated by the indication from Standard Model fits that its mass is ⩽200 GeV. Starting from a modified SM of Forshaw et al. with a triplet boson...
2004 / D.G. Sutherland -
Minimal string-scale unification of gauge couplings
Abstract We look for the minimal particle content which is necessary to add to the standard model in order to have a complete unification of gauge couplings and gravity at the weakly coupled heterotic string scale. Using the current precision...
2005 / D. Emmanuel-Costa, R. González Felipe -
Critical remarks on Finsler modifications of gravity and cosmology by Zhe Chang and Xin Li
Abstract I do not agree with the authors of papers arXiv:0806.2184 and arXiv:0901.1023v1 (published in [Zhe Chang, Xin Li, Phys. Lett. B 668 (2008) 453] and [Zhe Chang, Xin Li, Phys. Lett. B 676 (2009) 173], respectively). They consider that “In...
2010 / Sergiu I. Vacaru -
New identities among gauge theory amplitudes
Abstract Color-ordered amplitudes in gauge theories satisfy non-linear identities involving amplitude products of different helicity configurations. We consider the origin of such identities and connect them to the Kawai–Lewellen–Tye (KLT) relations ...
2010 / N.E.J. Bjerrum-Bohr, Poul H. Damgaard, Bo Feng, Thomas Søndergaard -
Saturation at hadron colliders
Abstract We extend the saturation models à la Golec-Biernat and Wüsthoff to cross-sections of hard processes initiated by virtual-gluon probes separated by large rapidity intervals at hadron colliders. We derive their analytic expressions and apply...
2004 / C. Marquet, R. Peschanski -
A note on embedding non-Abelian finite flavor groups in continuous groups
Abstract A non-Abelian finite flavor group G ⊂ SO ( 3 ) can have double covering ...
2009 / Paul H. Frampton, Thomas W. Kephart, Ryan M. Rohm -
Top squark mass: current limits revisited and new limits from Tevatron Run-I
Abstract Analyzing the ℓ + n -jets + E̸ T ...
2004 / Siba Prasad Das, Amitava Datta, Manas Maity -
Quantum gauge fields and flat connections in 2-dimensional BF theory
Abstract The 2-dimensional BF theory is both a gauge theory and a topological Poisson σ-model corresponding to a linear Poisson bracket. In [3], Torossian discovered a connection which governs correlation functions of the BF theory with sources for...
2011 / Anton Alekseev, Nevena Ilieva -
The SUSY CP problem and the MFV principle
Abstract We address the SUSY CP problem in the framework of Minimal Flavor Violation (MFV), where the SUSY flavor problem finds a natural solution. By contrast, the MFV principle does not solve the SUSY CP problem as it allows for the presence of...
2010 / Paride Paradisi, David M. Straub -
Coherent bremsstrahlung and GDR width from 252Cf cold fission
Abstract The energy spectrum of the high energy γ-rays in coincidence with the prompt γ-rays has been measured for the spontaneous fission of 252Cf. The nucleus–nucleus coherent bremsstrahlung of the accelerating fission fragments is observed and...
2010 / Deepak Pandit, S. Mukhopadhyay, Srijit Bhattacharya, Surajit Pal, A. De, et al. -
Symmetry energy from elliptic flow in 197Au+197Au
Abstract The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of neutron-rich systems at relativistic energies is proposed as an observable sensitive to the strength of the symmetry term in the equation ...
2011 / P. Russotto, P.Z. Wu, M. Zoric, M. Chartier, Y. Leifels, et al. -
Vortex condensation in the dual Chern–Simons–Higgs model
Abstract The contribution of nontrivial vacuum (topological) excitations, more specifically vortex configurations of the self-dual Chern–Simons–Higgs model, to the functional partition function is considered. By using a duality transformation, we...
2008 / Rudnei O. Ramos, J.F. Medeiros Neto