Physical sciences topic list of research papers
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Baryon–antibaryon nonets
Abstract The baryon–antibaryon SU ( 3 ) nonets are proposed as a scheme to classify the increased number of experimentally...
2005 / C.Z. Yuan, X.H. Mo, P. Wang -
Cosmic age problem revisited in the holographic dark energy model
Abstract Because of an old quasar APM 08279 + 5255 at z = 3.91 ...
2010 / Jinglei Cui, Xin Zhang -
Smooth initial conditions from weak gravity
Abstract CMB measurements reveal an unnaturally smooth early universe. We propose a mechanism to make this smoothness natural by weakening the strength of gravity at early times, and therefore altering which initial conditions have low entropy. ...
2011 / Brian Greene, Kurt Hinterbichler, Simon Judes, Maulik Parikh -
Theoretical upper bound on the mass of the LSP in the MNSSM
Abstract We study the neutralino sector of the Minimal Non-minimal Supersymmetric Standard Model (MNSSM) where the μ problem of the Minimal Supersymmetric Standard Model (MSSM) is solved without accompanying problems related with the appearance of...
2008 / S. Hesselbach, D.J. Miller, G. Moortgat-Pick, R. Nevzorov, M. Trusov -
Single Higgs-boson production through γγ scattering within the general 2HDM
Abstract The production of a single neutral Higgs boson h through (loop-induced) γγ collisions is explored in the context of the linear colliders within the general Two-Higgs-Doublet Model (2HDM). Two different mechanisms are analyzed: on the one...
2009 / Nicolás Bernal, David López-Val, Joan Solà -
Strangeness fluctuations and MEMO production at FAIR
Abstract We apply a coupled transport-hydrodynamics model to discuss the production of multi-strange meta-stable objects in Pb + Pb reactions at the FAIR facility. In addition to making predictions for yields of these particles we are able to...
2009 / Jan Steinheimer, Michael Mitrovski, Tim Schuster, Hannah Petersen, Marcus Bleicher, et al. -
Casimir effect in spacetime with extra dimensions – from Kaluza–Klein to Randall–Sundrum models
Abstract In this Letter, we derive the finite temperature Casimir force acting on a pair of parallel plates due to a massless scalar field propagating in the bulk of a higher dimensional brane model. In contrast to previous works which used...
2009 / L.P. Teo -
Radiative tritium β-decay and the neutrino mass
Abstract The shape of the electron energy spectrum in 3H β-decay permits a direct assay of the absolute scale of the neutrino mass; a highly accurate theoretical description of the electron energy spectrum is necessary to the empirical task. We...
2004 / Susan Gardner, Véronique Bernard, Ulf-G. Meißner -
Master formula for twist-3 soft-gluon-pole mechanism to single transverse-spin asymmetry
Abstract Perturbative QCD relates the single transverse-spin asymmetries (SSAs) for hard processes at large transverse-momentum of produced particle to partonic matrix elements that describe interference between scattering from a coherent...
2007 / Yuji Koike, Kazuhiro Tanaka -
Anomaly structure of supergravity and anomaly cancellation
Abstract We display the full anomaly structure of supergravity, including new contributions to the conformal anomaly. Our result has the super-Weyl and Kähler U ( 1 ...
2009 / Daniel Butter, Mary K. Gaillard -
Compact lattice formulation of Cho–Faddeev–Niemi decomposition: Gluon mass generation and infrared Abelian dominance
Abstract This Letter complements a new lattice formulation of SU(2) Yang–Mills theory written in terms of new variables in a compact form proposed in the previous paper. The new variables used in the formulation were once called the...
2007 / A. Shibata, S. Kato, K.-I. Kondo, T. Murakami, T. Shinohara, et al. -
Graviton emission in the bulk from a higher-dimensional Schwarzschild black hole
Abstract We consider the evaporation of ( 4 + n ) -dimensional non-rotating black holes into gravitons. We...
2006 / S. Creek, O. Efthimiou, P. Kanti, K. Tamvakis -
Reinterpretation of Faddeev–Niemi knot in Skyrme theory
Abstract We identify the Faddeev–Niemi knot in Skyrme theory as a vortex ring made of a helical baby skyrmion (a twisted chromomagnetic vortex which is periodic in z-coordinate) with the periodic ends connected together. This allows us to interpret...
2004 / Y.M. Cho -
Dyson–Schwinger equation and quantum phase transitions in massless QCD
Abstract We study the stability of the highest symmetric solution (Wigner-solution) of Dyson–Schwinger equations in chiral limit and at zero temperature. Our results confirm that if the chemical potential is not very large, the QCD vacuum is in the...
2006 / Wei Yuan, Huan Chen, Yu-xin Liu -
Phenomenology of flavor oscillations with non-perturbative effects from quantum field theory
Abstract We analyze phenomenological aspects of the quantum field theoretical formulation of meson mixing and obtain the exact oscillation formula in the presence of the decay. This formula is different from quantum mechanical formula by additional...
2004 / Antonio Capolupo, Chueng-Ryong Ji, Yuriy Mishchenko, Giuseppe Vitiello -
Quintessence and tachyon dark energy models with a constant equation of state parameter
Abstract In this work we determine the correspondence between quintessence and tachyon dark energy models with a constant dark energy equation of state parameter, w e ...
2011 / P.P. Avelino, L. Losano, J.J. Rodrigues -
On electron–positron pair production using a two level on resonant multiphoton approximation
Abstract We present an indepth investigation of certain aspects of the two level on resonant multiphoton approximation to pair production from vacuum in the presence of strong electromagnetic fields. Numerical computations strongly suggest that a...
2007 / I. Tsohantjis, S. Moustaizis, I. Ploumistakis -
New ALPS results on hidden-sector lightweights
Abstract The ALPS Collaboration runs a “Light Shining through a Wall” (LSW) experiment to search for photon oscillations into “Weakly Interacting Sub-eV Particles” (WISPs) often predicted by extensions of the Standard Model. The experiment is set up ...
2010 / Klaus Ehret, Maik Frede, Samvel Ghazaryan, Matthias Hildebrandt, Ernst-Axel Knabbe, et al. -
Proton radioactivity at non-collective prolate shape in high spin state of 94Ag
Abstract We predict proton radioactivity and structural transitions in high spin state of an excited exotic nucleus near proton drip line in a theoretical framework and investigate the nature and the consequences of the structural transitions on...
2010 / Mamta Aggarwal -
On messengers and metastability in gauge mediation
Abstract One notoriously difficult problem in perturbative gauge mediation of supersymmetry breaking via messenger fields is the generic presence of a phenomenologically unacceptable vacuum with messenger vevs, with a lower energy than the desired...
2011 / Emilian Dudas, Stéphane Lavignac, Jeanne Parmentier