Physical sciences topic list of research papers
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Energy dependence of CP-violation reach for monochromatic neutrino beam
Abstract The ultimate goal of future neutrino facilities is the determination of CP violation in neutrino oscillations. Besides | U ( e ...
2008 / José Bernabéu, Catalina Espinoza -
Properties of fermion mixings in intersecting D-brane models
Abstract We consider the Yukawa couplings for quarks and leptons in the context of Pati–Salam model using intersecting D-brane models where the Yukawa coupling matrices are rank one in a simple choice of family replication. The CKM mixings can be...
2006 / Bhaskar Dutta, Yukihiro Mimura -
A theoretical construction of wormhole supported by phantom energy
Abstract A new solution has been presented for the spherically symmetric space–time describing wormholes with phantom energy. The model suggests that the existence of wormhole is supported by arbitrarily small quantity of phantom energy. ...
2005 / F. Rahaman, M. Kalam, M. Sarker, K. Gayen -
Second random phase approximation and renormalized realistic interactions
Abstract We examine the response of closed-shell nuclei using a renormalized interaction, derived with the Unitary Correlation Operator Method (UCOM) from the Argonne V18 potential, and a second RPA (SRPA) method. The same two-body interaction is...
2008 / P. Papakonstantinou, R. Roth -
A note on DSR-like approach to space–time
Abstract In this Letter we discuss the possibility to define a space–time with a DSR based approach. We show that the strategy of defining a non-linear realization of the Lorentz symmetry with a consistent vector composition law cannot be reconciled ...
2005 / R. Aloisio, A. Galante, A. Grillo, E. Luzio, F. Méndez -
High-energy cosmic-ray positrons from hidden-gauge-boson dark matter
Abstract We provide a scenario in which a hidden U ( 1 ) gauge boson constitutes dark matter of the Universe and decays into the...
2009 / Chuan-Ren Chen, Fuminobu Takahashi, T.T. Yanagida -
Constraints on dark energy from the lookback time versus redshift test
Abstract We use lookback time versus redshift data from galaxy clusters (Capozziello et al., 2004 [9]) and passively evolving galaxies (Simon et al., 2005 [62]), and apply a Bayesian prior on the total age of the Universe based on WMAP measurements, ...
2010 / Lado Samushia, Abha Dev, Deepak Jain, Bharat Ratra -
Anomaly cancellation and conformality in quiver gauge theories
Abstract Abelian quiver gauge theories provide non-supersymmetric candidates for the conformality approach to physics beyond the standard model. Written as N = 0 ...
2006 / Edoardo Di Napoli, Paul H. Frampton -
Tomography for amplitudes of hard exclusive processes
Abstract We discuss which part of information about hadron structure encoded in the Generalized Parton Distributions (GPDs) [part of total GPD image] can be restored from the known amplitude of a hard exclusive process. The physics content of this...
2007 / M.V. Polyakov -
Signatures of axinos and gravitinos at colliders
Abstract The axino and the gravitino are well-motivated candidates for the lightest supersymmetric particle (LSP) and also for cold dark matter in the Universe. Assuming that a charged slepton is the next-to-lightest supersymmetric particle (NLSP),...
2005 / A. Brandenburg, L. Covi, K. Hamaguchi, L. Roszkowski, F.D. Steffen -
Two nucleons on a lattice
Abstract The two-nucleon sector is near an infrared fixed point of QCD and as a result the S-wave scattering lengths are unnaturally large compared to the effective ranges and shape parameters. It is usually assumed that a lattice QCD simulation of...
2004 / S.R. Beane, P.F. Bedaque, A. Parreño, M.J. Savage -
The decay of quantum D-branes
Abstract We study the quantum decay of D0-branes in two-dimensional 0B string theory. The quantum nature of the branes provides a natural cut-off for the closed string emission rate. We find exact quantum mechanical wave functions for the decaying...
2004 / Jan Ambjørn, Romuald A. Janik -
Enlarged NH symmetries: Particle dynamics and gauge symmetries
Abstract We show how the Newton–Hooke (NH) symmetries, representing a nonrelativistic version of de-Sitter symmetries, can be enlarged by a pair of translation vectors describing in Galilean limit the class of accelerations linear in time. We study...
2008 / Joaquim Gomis, Jerzy Lukierski -
Flavor twisted boundary conditions and the nucleon axial current
Abstract With twisted boundary conditions on the quark fields, we study nucleon matrix elements of the axial current utilizing twisted heavy baryon chiral perturbation theory. One can explore the momentum transfer dependence of the axial form...
2005 / Brian C. Tiburzi -
On a Nonself Adjoint Eigenfunction Expansion2005 / D. Naylor
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Quantum cosmology with varying speed of light: Canonical approach
Abstract We investigate ( n + 1 ) -dimensional cosmology with varying speed of light. After solving...
2008 / P. Pedram, S. Jalalzadeh -
Search for new physics via single-top production at the LHC
Abstract We consider single-top production as a probe for new physics effects at the Large Hadron Collider (LHC). We argue that for natural theories a small deviation from the Standard Model tree-level couplings in this reaction can be parameterized ...
2007 / Qing-Hong Cao, Jose Wudka, C.-P. Yuan -
Backreaction of the Hawking radiation
Abstract Black holes create a vacuum matter charge to protect themselves from the quantum evaporation. A spherically symmetric black hole having initially no matter charges radiates away about 10% of the initial mass and comes to a state in which...
2006 / G.A. Vilkovisky -
A fresh look into the neutron EDM and magnetic susceptibility
Abstract We reexamine the estimate of the neutron electric dipole moment (NEDM) from chiral and QCD spectral sum rules (QSSR) approaches. In the former, we evaluate the pion mass corrections which are about 5% of the leading Log results. However,...
2008 / Stephan Narison -
Nonperturbative definition of the pole mass and short distance expansion of the heavy quark potential in QCD
Abstract We show that the O ( Λ ) ambiguity in the pole mass can be fixed in a natural way by introducing a modified...
2004 / G. Grunberg