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We argue that the vacuum polarization by the virtual electron-positron pairs can be measured by studying a Josephson junction in a strong magnetic field. The vacuum polarization results in a weak dependence of the Josephson constant on the…

Superconductivity · Physics 2014-11-20 A. A. Penin

We apply polarization resolved photoluminescence spectroscopy to measure the spin polarization of a two dimensional electron gas in perpendicular magnetic field. In the vicinity of filling factor nu=5/2, we observe a sharp discontinuity in…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 M. Stern , P. Plochocka , V. Umansky , D. K. Maude , M. Potemski , I. Bar-Joseph

As a follow up of our work on the electromagnetic four-current, we study for the first time the relativistic polarization and magnetization spatial distributions inside a spin-$\frac{1}{2}$ target within the quantum phase-space approach.…

High Energy Physics - Phenomenology · Physics 2023-05-09 Yi Chen , Cédric Lorcé

Using the formalism of spin-weighted functions we present an all-sky analysis of polarization in the Cosmic Microwave Background (CMB). Linear polarization is a second-rank symmetric and traceless tensor, which can be decomposed on a sphere…

Astrophysics · Physics 2009-10-28 Matias Zaldarriaga , Uros Seljak

We study the photon self-energy in magnetized chiral plasma by solving the response of electromagnetic field perturbations in chiral kinetic theory with Landau level states. With lowest Landau level approximation and in collisionless limit,…

High Energy Physics - Phenomenology · Physics 2020-07-15 Han Gao , Zonglin Mo , Shu Lin

We investigate the two-dimensional motion of relativistic cold electrons in the presence of `strictly' spatially varying magnetic fields satisfying, however, no magnetic monopole condition. We find that the degeneracy of Landau levels,…

Quantum Physics · Physics 2021-10-22 Srishty Aggarwal , Banibrata Mukhopadhyay , Gianluca Gregori

The photon behavior in an arbitrary superposition of constant magnetic and electric fields is considered on most general grounds basing on the first principles like Lorentz- gauge- charge- and parity-invariance. We make model- and…

High Energy Physics - Theory · Physics 2011-02-11 Anatoly E. Shabad , Vladimir V. Usov

I provide updates for the theoretical predictions of the muon and electron anomalous magnetic moments, for the shift in the fine structure constant $\alpha(M_Z)$ and for the weak mixing parameter $\sin^2 \Theta_W(M_Z)$. Phenomenological…

High Energy Physics - Phenomenology · Physics 2017-11-17 Fred Jegerlehner

We present here the results of polarized magneto-photoluminescence measurements on a high mobility single-heterojunction. The presence of a doublet structure over a large magnetic field range (2>nu>1/6) is interpreted as possible evidence…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 F. M. Munteanu , Yongmin Kim , C. H. Perry , D. G. Rickel , J. A. Simmons , J. L. Reno

We study the effect of laser photon merging, or equivalently high harmonic generation, in the quantum vacuum subject to inhomogeneous electromagnetic fields. Such a process is facilitated by the effective nonlinear couplings arising from…

High Energy Physics - Phenomenology · Physics 2014-08-14 Holger Gies , Felix Karbstein , Rashid Shaisultanov

The polarization tensor is a geometric quantity associated with a domain. It is a signature of the small inclusion's existence inside a domain and used in the small volume expansion method to reconstruct small inclusions by boundary…

Analysis of PDEs · Mathematics 2020-01-20 Hyeonbae Kang , Xiaofei Li , Shigeru Sakaguchi

We present a combined theoretical and experimental study of magnetic resonance transitions induced by polarization-modulated light in cesium vapor exposed to a transverse magnetic field. Signals are obtained by phase-sensitive analysis of…

Atomic Physics · Physics 2013-12-06 E. Breschi , Z. D. Gruijc , P. Knowles , A. Weis

We consider the effect of the photon radiative correction on the vacuum energy in a superstrong magnetic field. The notion of a photon anomalous magnetic moment is analyzed and its connection with the quasiparticle character of the…

High Energy Physics - Theory · Physics 2015-03-13 Selym Villalba Chavez

We present a generalized frequency redistribution function for the polarized two-term atom in an arbitrary magnetic field. This result is derived within a new formulation of the quantum problem of coherent scattering of polarized radiation…

Solar and Stellar Astrophysics · Physics 2014-09-02 R. Casini , M. Landi Degl'Innocenti , R. Manso Sainz , E. Landi Degl'Innocenti , M. Landolfi

Calculations of reaction rates for the third-order QED process of photon splitting in strong magnetic fields traditionally have employed either the effective Lagrangian method or variants of Schwinger's proper-time technique. Recently,…

High Energy Physics - Theory · Physics 2009-10-31 Matthew G. Baring

Using the real time formalism of the finite temperature field theory we calculate the 1-loop polarization tensor in the presence of a background magnetic field in a medium. The expression is obtained to linear order in the background field…

High Energy Physics - Phenomenology · Physics 2009-11-07 Sushan Konar

In the present study, we consider the effects of vacuum birefringence and dichroism in strong electromagnetic fields. According to quantum electrodynamics, the vacuum state exhibits different refractive properties depending on the probe…

High Energy Physics - Phenomenology · Physics 2023-03-30 I. A. Aleksandrov , V. M. Shabaev

In a recent paper it is claimed that vacuum birefringence has been experimentally observed for the first time by measuring the degree of polarization of visible light from a Magnetar candidate, a neutron star with a magnetic field…

High Energy Astrophysical Phenomena · Physics 2017-11-27 L. M. Capparelli , A. Damiano , L. Maiani , A. D. Polosa

It is pointed, that effects of refraction of electromagnetic radiation in the medium, formed by the magnetized vacuum, become essential already for relatively soft photons, not hard enough to create an electron-positron pair, including…

High Energy Physics - Theory · Physics 2007-05-23 A. E. Shabad

It is known that vacuum polarization can modify the photon propagation modes in the atmospheric plasma of a strongly magnetized neutron star. A resonance occurs when the effect of vacuum polarization on the photon modes balances that of the…

Astrophysics · Physics 2009-11-07 Dong Lai , Wynn C. G. Ho