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We predict unidirectional magnetoresistance effects arising in a bilayer composed of a nonmagnetic metal and a ferromagnetic insulator, whereby both longitudinal and transverse resistances vary when the direction of the applied electric…

Mesoscale and Nanoscale Physics · Physics 2025-03-10 M. Mehraeen , Pengtao Shen , Steven S. -L. Zhang

Recently, a conceptually new physics beyond the Standard Model (SM), unparticle, has been proposed, where a hidden conformal sector is coupled to the SM sector through higher dimensional operators. In this setup, we investigate unparticle…

High Energy Physics - Phenomenology · Physics 2008-11-26 Tatsuru Kikuchi , Nobuchika Okada , Michihisa Takeuchi

The perturbation of the lunar motion caused by a hypothetical violation of the equivalence principle is analytically worked out in terms of power series \`a la Hill-Brown. The interaction with the quadrupolar tide is found to amplify the…

General Relativity and Quantum Cosmology · Physics 2009-12-30 Thibault Damour , David Vokrouhlicky

A simple model is presented to calculate the potential of mean force between a polyion and a multivalent counterion inside a polyelectrolite solution. We find that under certain conditions the electrostatic interactions can lead to a strong…

Statistical Mechanics · Physics 2009-11-11 Jürgen F. Stilck , Yan Levin

We demonstrate that $CP-$violation in the Majorana mass matrices of the heavy neutrinos can generate a $CP-$asymmetric universe. The subsequent decay of the Majorana particles generates a lepton number asymmetry. During the electroweak…

High Energy Physics - Phenomenology · Physics 2010-11-01 Marion Flanz , Emmanuel A. Paschos , Utpal Sarkar

Electromagnetism becomes a nonlinear theory having (effective) photon-photon interactions due at least to electron-positron fluctuations in the vacuum. We discuss the consequences of the nonlinearity for the force felt by a charge probe…

High Energy Astrophysical Phenomena · Physics 2013-03-20 Lance Labun , Jan Rafelski

Latest measurements of $\Delta\eta\Delta\varphi$ correlations of identified particles show differences in particle production between baryons and mesons. The correlation functions for mesons exhibit the expected peak dominated by effects of…

High Energy Physics - Experiment · Physics 2023-07-11 Małgorzata Anna Janik

The amplification of the primordial magnetic fields and the gravitational baryogenesis, a mechanism that allows to generate the baryon asymmetry in the Universe by means of the coupling between the Ricci scalar curvature and the baryon…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-18 Herman J. Mosquera Cuesta , Gaetano Lambiase

A particularly simple Lorentz-violating modification of the Maxwell theory of photons maintains gauge invariance, CPT, and renormalization. This modified-Maxwell theory, coupled to standard Dirac particles, involves nineteen dimensionless…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. R. Klinkhamer , M. Risse

We consider a model for generating a particle-antiparticle asymmetry through out-of-equilibrium decays of a massive particle due to non-renormalizable, effective interactions.

High Energy Physics - Phenomenology · Physics 2009-10-28 Antonio Bouzas , Wai Yan Cheng , Graciela Gelmini

Experimental observation of nucleon instability is one of the missing key components required for the explanation of baryon asymmetry of the universe. Proton decays with the modes and rates predicted by(B-L)-conserving schemes of Grand…

High Energy Physics - Experiment · Physics 2007-05-23 Yuri Kamyshkov

The long-term rates of change of all the Keplerian orbital elements of a two-body system acted upon by a remote massive pointlike object are analytically worked out, to the Newtonian quadrupolar level, without any restriction either on the…

General Relativity and Quantum Cosmology · Physics 2026-02-16 Lorenzo Iorio

We consider light new particles $\chi$ and $\phi$ that carry baryon and lepton numbers. If these particles are lighter than nucleons they lead to exotic decays such as $p\to \pi^+ \chi$ and $p\to e^+\phi$, not yet fully constrained by…

High Energy Physics - Phenomenology · Physics 2021-01-01 Julian Heeck

The possibility that like-charges can attract each other under the mediation of mobile counterions is by now well documented experimentally, numerically, and analytically. Yet, obtaining exact results is in general impossible, or restricted…

Statistical Mechanics · Physics 2016-03-29 Gabriel Tellez , Emmanuel Trizac

We discuss the predictions for neutron-anti-neutron oscillation in various supersymmetric and non-supersymmetric grand unified theories. It is pointed out that in a new class of superstring inspired grand unified theories of $E_6$-type that…

High Energy Physics - Phenomenology · Physics 2009-09-25 R. N. Mohapatra

We present a novel solution of the Mercury perihelion advance shift in the new gravity model. It is found that the non-relativistic reduction of the Dirac equation with the gravitational potential produces the new gravitational potential of…

General Physics · Physics 2009-11-12 Takehisa Fujita , Naohiro Kanda

Helical hypermagnetic fields in the primordial Universe can produce the observed amount of baryon asymmetry through the chiral anomaly without any ingredients beyond the standard model of particle physics. While they generate no $B-L$…

High Energy Physics - Phenomenology · Physics 2016-05-24 Tomohiro Fujita , Kohei Kamada

The extension of the Standard Model by heavy right-handed neutrinos can simultaneously explain the observed neutrino masses via the seesaw mechanism and the baryon asymmetry of the Universe via leptogenesis. If the mass of the heavy…

High Energy Physics - Phenomenology · Physics 2020-07-10 Marco Drewes , Bjorn Garbrecht , Dario Gueter , Juraj Klaric

Exchange of unparticle stuff of dimension $d_\U$ with FCNC interaction can induce $M^{12,u}$ and $\Gamma^{12,u}$ causing meson and anti-meson mixing with the relation $\Gamma^{12,u}/M^{12,u} = 2 \tan(\pi d_\U)$. We show that this type of…

High Energy Physics - Phenomenology · Physics 2011-03-28 Bo Ren , Xiao-Gang He , Pei-Chu Xie

We show that results of a simple dynamical gedanken experiment interpreted according to standard Newton's gravitational theory, may reveal that three-dimensional space is curved. The experiment may be used to reconstruct the curved geometry…

General Relativity and Quantum Cosmology · Physics 2014-12-16 M. A. Abramowicz , G. F. R. Ellis J. Horak , M. Wielgus