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We show how a nearly massless scalar field conformally and disformally coupled to matter can affect the dynamics of two bodies in their inspiralling phase before merging. We discuss both the conservative dynamics, e.g. how the energy of the…

广义相对论与量子宇宙学 · 物理学 2019-07-03 Philippe Brax , Anne-Christine Davis , Adrien Kuntz

The investigation of a sizable thermal enhancement of magnetization is put forward for uniaxial ferromagnetic nanoparticles that are placed in a rotating magnetic field. We elucidate the nature of this phenomenon and evaluate the resonant…

统计力学 · 物理学 2016-08-16 S. I. Denisov , T. V. Lyutyy , P. Hänggi

The $\epsilon$ Lupi A (HD 136504) system stands out among magnetic massive binaries as the only short-period binary system in which both components have detectable magnetic fields. The proximity of the magnetospheres of the components leads…

太阳与恒星天体物理 · 物理学 2024-08-14 Ayan Biswas , Gregg A. Wade , Poonam Chandra , Veronique Petit , Barnali Das , Matthew E. Shultz

We discuss an experiment in which two magnetic insulators that both show a field-induced magnetic-ordering transition are weakly coupled to one another and are placed into an ex- ternal magnetic field. If the respective magnetic states can…

强关联电子 · 物理学 2012-12-18 Andreas Schilling , Henrik Grundmann

The recent discoveries of circumbinary planets by $\it Kepler$ raise questions for contemporary planet formation models. Understanding how these planets form requires characterizing their formation environment, the circumbinary…

地球与行星天体物理 · 物理学 2016-10-20 David P. Fleming , Thomas R. Quinn

The dynamics of colliding wind binary systems and conditions for efficient particle acceleration therein have attracted multiple numerical studies in the recent years. These numerical models seek an explanation of the thermal and…

太阳与恒星天体物理 · 物理学 2016-11-09 R. Kissmann , K. Reitberger , O. Reimer , A. Reimer , E. Grimaldo

We investigate the effect of planetary corotation on energy dissipation within the magnetosphere-ionosphere system of exoplanets. Using MHD simulations, we find that tidally locked exoplanets have a higher cross-polar cap potential (CPCP)…

地球与行星天体物理 · 物理学 2025-05-23 Fatemeh Bagheri , Alex Glocer , Ramon E. Lopez

The recent accessibility of high quality, charge neutral monolayer transition metal dichalcogenides with narrow exciton linewidths at the homogeneous limit provides an ideal platform to study excitonic many-body interactions. In particular,…

The magnetic interaction of a pair of bound magnetic polarons (BMP) in diluted magnetic semiconductors (DMS) is analyzed via a generalized Hubbard-type Hamiltonian for two carriers in the presence of effective magnetic fields arising from…

材料科学 · 物理学 2007-05-23 D. E. Angelescu , R. N. Bhatt

We examine the effect of changing the linear polarization angle $\theta$ of incident microwaves with respect to the dc current on radiation-induced magnetoresistance oscillations in a two-dimensional (2D) system within the balance-equation…

材料科学 · 物理学 2015-06-12 X. L. Lei , S. Y. Liu

We construct an explicit electromagnetic analogue of the post-Newtonian Hamiltonian framework widely used in gravitational-wave physics. Starting from the Lorentz--Dirac equation and implementing Landau--Lifshitz order reduction, we derive…

Nonlinear magnetotransport of a microwave-irradiated high mobility two-dimensional electron system under a finite direct current excitation is analyzed using a dc-controlled scheme with photon-assisted transition mechanism. The predicted…

介观与纳米尺度物理 · 物理学 2008-08-27 X. L. Lei , S. Y. Liu

The young high-eccentricity binary DQ Tau exhibits powerful recurring millimeter-band (mm) flaring attributed to collisions between the two stellar magnetospheres near periastron, when the stars are separated by only ~8Rstar. These…

太阳与恒星天体物理 · 物理学 2015-05-27 Konstantin V. Getman , Patrick S. Broos , Demerese M. Salter , Gordon P. Garmire , Michiel R. Hogerheijde

We study the dependence of the electromagnetic luminosity --produced by interactions of force-free magnetospheres-- on dipole inclinations in binary neutron star systems. We show that this interaction extracts kinetic energy from the system…

广义相对论与量子宇宙学 · 物理学 2014-08-06 Marcelo Ponce , Carlos Palenzuela , Luis Lehner , Steven L. Liebling

As nanomagnetic devices scale to smaller sizes, spin-orbit coupling due to the broken structural inversion symmetry at interfaces becomes increasingly important. Here we study interfacial spin-orbit coupling effects in magnetic bilayers…

介观与纳米尺度物理 · 物理学 2013-11-26 Kyoung-Whan Kim , Hyun-Woo Lee , Kyung-Jin Lee , M. D. Stiles

The spin-transfer torque from a DC spin-polarized current can generate highly-coherent magnetic precession in nanoscale magnetic-multilayer devices. By measuring linewidths of spectra from the resulting resistance oscillations, we argue…

其他凝聚态物理 · 物理学 2009-11-11 J. C. Sankey , I. N. Krivorotov , S. I. Kiselev , P. M. Braganca , N. C. Emley , R. A. Buhrman , D. C. Ralph

We expand on our study of the gravitational and electromagnetic emissions from the late stage of an inspiraling neutron star binary as presented in Ref. \cite{Palenzuela:2013hu}. Interactions between the stellar magnetospheres, driven by…

广义相对论与量子宇宙学 · 物理学 2013-09-13 Carlos Palenzuela , Luis Lehner , Steven L. Liebling , Marcelo Ponce , Matthew Anderson , David Neilsen , Patrick Motl

We formulate a low-energy theory for the magnetic interactions between electrons in the multi-band Hubbard model under non-equilibrium conditions determined by an external time-dependent electric field which simulates laser-induced spin…

强关联电子 · 物理学 2013-04-11 Andrea Secchi , Sergei Brener , Alexander I. Lichtenstein , Mikhail I. Katsnelson

Chiral magnetic insulators manifest novel phases of matter where the sense of rotation of the magnetization is associated with exotic transport phenomena. Effective control of such phases and their dynamical evolution points to the search…

材料科学 · 物理学 2023-01-24 Paula Mellado , Kevin Hofhuis , Ignacio Tapia , Andres Concha

It is well known that magnetic activity in late-type stars increases with increasing rotation rate. Using inversion techniques akin to medical imaging, the rotationally broadened profiles from such stars can be used to reconstruct `Doppler…

天体物理学 · 物理学 2009-11-13 C. A. Watson , D. Steeghs , V. S. Dhillon , T. Shahbaz