Physical sciences topic list of research papers
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Coupled oscillators as models of quintom dark energy
Abstract We investigate quintom cosmology in FRW universes using isomorphic models consisting of three coupled oscillators, one of which carries negative kinetic energy. In particular, we examine the cosmological paradigms of minimally-coupled...
2008 / M.R. Setare, E.N. Saridakis -
Quantum-mechanical stability of fermion–soliton systems
Abstract Topological objects resulting from symmetry breakdown may be either stable or metastable depending on the pattern of symmetry breaking. However, if they acquire zero-energy modes of fermions, and in the process acquire non-integer fermionic ...
2004 / Narendra Sahu, Urjit A Yajnik -
Accelerating universe in two-dimensional noncommutative dilaton cosmology
Abstract We show that the phase transition from the decelerating universe to the accelerating universe, which is of relevance to the cosmological coincidence problem, is possible in the semiclassically quantized two-dimensional dilaton gravity by...
2006 / Wontae Kim, Myung Seok Yoon -
Smoothly evolving supercritical-string dark energy relaxes supersymmetric-dark-matter constraints
Abstract We show that Supercritical-String-Cosmology (SSC) off-equilibrium and time-dependent-dilaton effects lead to a smoothly evolving dark energy for the last 10 billion years in concordance with all presently available astrophysical data. Such...
2007 / A.B. Lahanas, N.E. Mavromatos, D.V. Nanopoulos -
Unitarity triangle from CP invariant quantities
Abstract We construct the CKM unitarity triangle from CP invariant quantities, using the coupling constant of weak decays with flavor change from b to u, and the particle–antiparticle mixing probabilities in the ...
2006 / Konrad Kleinknecht, Burkhard Renk -
Unitarity of Little Higgs models signals new physics of UV completion
Abstract The “Little Higgs” opens up a new avenue for natural electroweak symmetry breaking in which the standard model Higgs particle is realized as a pseudo-Goldstone boson and thus is generically light. The symmetry breaking structure of the...
2004 / Spencer Chang, Hong-Jian He -
Single inclusive hadron production at RHIC and the LHC from the color glass condensate
Abstract Using the unintegrated gluon distribution obtained from numerical simulations of the Balitsky–Kovchegov equation with running coupling, we obtain a very good description of RHIC data on single inclusive hadron production at forward...
2010 / Javier L. Albacete, Cyrille Marquet -
Electromagnetic corrections to non-leptonic two-body B and D decays
Abstract We present analytic expressions to evaluate at O ( α ) the effects of soft-photon emission, and the related virtual...
2005 / Elisabetta Baracchini, Gino Isidori -
NLO semi-inclusive Drell–Yan cross-section in quantum chromodynamics as a factorization analyzer
Abstract We evaluate in perturbative QCD the semi-inclusive Drell–Yan cross-section for the production of a single hadron accompanying the lepton pair. We demonstrate to one loop level a collinear factorization formula within the fracture functions...
2008 / Federico Alberto Ceccopieri, Luca Trentadue -
Deformed two-photon squeezed states in noncommutative space
Abstract Recent studies on nonperturbation aspects of noncommutative quantum mechanics explored a new type of boson commutation relations at the deformed level, described by deformed annihilation–creation operators in noncommutative space. This...
2004 / Jian-Zu Zhang -
Semi-inclusive deep inelastic scattering at small-x
Abstract We study the semi-inclusive hadron production in deep inelastic scattering at small-x. A transverse-momentum-dependent factorization is found consistent with the results calculated in the small-x approaches, such as the color-dipole...
2009 / Cyrille Marquet, Bo-Wen Xiao, Feng Yuan -
Cosmological scaling solutions with tachyon: Modified gravity model
Abstract Modifying the Einstein's gravity at large distance scales is one of the interesting proposals to explain the late time acceleration of the universe. In this Letter, we analyse scaling solutions in modified gravity models where the universe...
2008 / A.A. Sen, N. Chandrachani Devi -
Heavy quark production by a quasi-classical color field in proton–nucleus collisions
Abstract We calculate the inclusive heavy quark production cross section for proton–nucleus collisions at high energies. We perform calculation in a quasi-classical approximation (McLerran–Venugopalan model) neglecting all low-x evolution effects....
2004 / Kirill Tuchin -
Detecting light leptophilic gauge boson at BESIII detector
Abstract The O ( GeV ) extra U ( 1 ...
2009 / Peng-fei Yin, Jia Liu, Shou-hua Zhu -
Hyperentropic systems and the generalized second law of thermodynamics
Abstract The holographic bound asserts that the entropy S of a system is bounded from above by a quarter of the area A of a circumscribing surface measured in Planck areas: S ...
2011 / Shahar Hod -
Does there arise a significant enhancement of the dynamical quark mass in external magnetic field?
Abstract Recently, it was found in QED that the generation of a dynamical electron mass in a strong magnetic field is significantly enhanced by the perturbative electron mass. In the present Letter, the related question of a possible enhancement of...
2008 / K.G. Klimenko, V.Ch. Zhukovsky -
UV–IR mixing in non-commutative plane
Abstract Poincaré-invariant quantum field theories can be formulated on non-commutative planes if the coproduct on the Poincaré group is suitably deformed. As shown in our previous work, this important result implies modification of free field...
2006 / A.P. Balachandran, A. Pinzul, B.A. Qureshi -
The Jarzynski identity and the AdS/CFT duality
Abstract We point out a remarkable analogy between the Jarzynski identity from non-equilibrium statistical physics and the AdS/CFT duality. We apply the logic that leads to the Jarzynski identity to renormalization group (RG) flows of quantum field...
2011 / Djordje Minic, Michel Pleimling -
Soldering formalism in noncommutative field theory: a brief note
Abstract In this Letter, I develop the soldering formalism in a new domain—the noncommutative planar field theories. The soldering mechanism fuses two distinct theories showing opposite or complimentary properties of some symmetry, taking into...
2003 / Subir Ghosh -
Effective field theory, large number of particle species, and holography
Abstract An effective quantum field theory (QFT) with a manifest UV/IR connection, so as to be valid for arbitrarily large volumes, can successfully be applied to the cosmological dark energy problem as well as the cosmological constant (CC)...
2009 / R. Horvat