Physical sciences topic list of research papers
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Cosmological solutions of time varying speed of light theories
Abstract We consider scalar–tensor theory for describing varying speed of light in a spatially flat FRW space–time. We find some exact solutions in the metric and Palatini formalisms. Also we examine the dynamics of this theory by dynamical system...
2009 / Mahmood Roshan, Maryam Nouri, Fatimah Shojai -
Generalized uncertainty principle, quantum gravity and Hořava–Lifshitz gravity
Abstract We investigate a close connection between generalized uncertainty principle (GUP) and deformed Hořava–Lifshitz (HL) gravity. The GUP commutation relations correspond to the UV-quantum theory, while the canonical commutation relations...
2009 / Yun Soo Myung -
The area quantum and Snyder space
Abstract We show that in the Snyder space the area of the disc and of the sphere can be quantized. It is also shown that the area spectrum of the sphere can be related to the Bekenstein conjecture for the area spectrum of a black hole horizon. ...
2008 / Juan M. Romero, Adolfo Zamora -
Non-thermal leptogenesis and baryon asymmetry in different neutrino mass models
Abstract In the present work we study non-thermal leptogenesis and baryon asymmetry in the universe in different neutrino mass models discussed recently. For each model we obtain a formula relating the reheating temperature after inflation to the...
2006 / G. Panotopoulos -
Anomalous single top production at the LHeC based γp collider
Abstract The top quark could provide very important information for the Standard Model extensions due to its large mass close to the electroweak symmetry breaking scale. In this work, anomalous single top production is studied by using ...
2010 / İ.T. Cakır, O. Cakır, S. Sultansoy -
Determining the Θ+ quantum numbers through the K+p→π+K+n reaction
Abstract We study the K + p→π + K + n reaction with some kinematics suited to the production of the Θ ...
2003 / T Hyodo, A Hosaka, E Oset -
Hybrid natural low scale inflation
Abstract We discuss the phenomenological implications of Hybrid Natural Inflation models in which the inflaton is a pseudo-Goldstone boson but inflation is terminated by a second scalar field. A feature of the scheme is that the scale of breaking of ...
2010 / Graham G. Ross, Gabriel Germán -
Inflationary potential from 21 cm tomography and Planck
Abstract Three-dimensional neutral hydrogen mapping using the redshifted 21 cm line has recently emerged as a promising cosmological probe. Within the framework of slow-roll reconstruction, we analyze how well the inflationary potential can be...
2009 / Vernon Barger, Yu Gao, Yi Mao, Danny Marfatia -
Detection of source inhomogeneity through event-by-event two-pion Bose–Einstein correlations
Abstract We develop a method for detecting the inhomogeneity of the pion-emitting sources produced in ultra-relativistic heavy ion collisions, through event-by-event two-pion Bose–Einstein correlations. The root-mean-square of the...
2008 / Yan-Yu Ren, Wei-Ning Zhang, Jian-Li Liu -
Complete intersecting non-extreme p-branes
Abstract We give general intersecting brane solutions without assuming any restriction on the metric in supergravity coupled to a dilaton and antisymmetric tensor fields in arbitrary dimensions D. The result is a general class of intersecting brane...
2004 / Yan-Gang Miao, Nobuyoshi Ohta -
Constraints on modified Chaplygin gas from recent observations and a comparison of its status with other models
Abstract In this Letter, a modified Chaplygin gas (MCG) model of unifying dark energy and dark matter with the exotic equation of state p MCG ...
2008 / Jianbo Lu, Lixin Xu, Jiechao Li, Baorong Chang, Yuanxing Gui, et al. -
Covariant anomalies and Hawking radiation from charged rotating black strings in anti-de Sitter spacetimes
Abstract Motivated by the success of the recently proposed method of anomaly cancellation to derive Hawking fluxes from black hole horizons of spacetimes in various dimensions, we have further extended the covariant anomaly cancellation method...
2008 / Jun-Jin Peng, Shuang-Qing Wu -
Mixed tensor susceptibility of the QCD vacuum from effective quark–quark interactions
Abstract We calculate the mixed tensor susceptibility of QCD vacuum in the framework of the global color symmetry model. In our calculation, the functional integration over gluon fields can be performed and the gluonic vacuum observable can be...
2005 / Zhao Zhang, Wei-Qin Zhao -
Neutralino annihilation beyond leading order
Abstract High-precision measurements of the relic dark matter density and the calculation of dark matter annihilation branching fractions in the sun or the galactic halo today motivate the computation of the neutralino annihilation cross section...
2005 / Vernon Barger, Wai-Yee Keung, Heather E. Logan, Gabe Shaughnessy, Adam Tregre -
Coupling brane fields to bulk supergravity
Abstract In this Letter we present a simple, general prescription for coupling brane localized fields to bulk supergravity. We illustrate the procedure by considering 6D N = 2 ...
2010 / Susha L. Parameswaran, Jonas Schmidt -
Can MSSM particle be the inflaton?
Abstract We consider the possibility of using one of the D-flat directions in the minimal supersymmetric standard model (MSSM) as the inflaton. We show that the flat direction consisting of (first generation) left- and right-handed up-squarks as...
2004 / Shinta Kasuya, Takeo Moroi, Fuminobu Takahashi -
Spontaneous parity violation in a supersymmetric left–right symmetric model
Abstract We propose a novel implementation of spontaneous parity breaking in supersymmetric left–right symmetric model, avoiding some of the problems encountered in previous studies. This implementation includes a bi-triplet and a singlet, in...
2009 / Sudhanwa Patra, Anjishnu Sarkar, Utpal Sarkar, Urjit A. Yajnik -
Testing spontaneous parity violation at the LHC
Abstract We construct a supersymmetric SU ( 2 ) ...
2008 / Chin-Aik Lee, Qaisar Shafi -
Missing monopole strength of the Hoyle state in the inelastic α+12C scattering
Abstract Analyses of the inelastic α+12C scattering at medium energies have indicated that the strength of the Hoyle state (the isoscalar 0 2 ...
2008 / Dao T. Khoa, Do Cong Cuong -
Sneutrino dark matter and the observed anomalies in cosmic rays
Abstract We revisit sneutrino dark matter in light of the recent results from the PAMELA and ATIC experiments. In the U ( ...
2009 / Rouzbeh Allahverdi, Bhaskar Dutta, Katherine Richardson-McDaniel, Yudi Santoso