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We demonstrate that decoherence of many-spin systems can drastically differ from decoherence of single-spin systems. The difference originates at the most basic level, being determined by parity of the central system, i.e. by whether the…

Quantum Physics · Physics 2009-11-07 A. Melikidze , V. V. Dobrovitski , H. A. De Raedt , M. I. Katsnelson , B. N. Harmon

Accurate modeling of transition metal-containing compounds is of great interest due to their wide-ranging and significant applications. These systems present several challenges from an electronic structure perspective, including significant…

We study metallic transport in an effective model that describes the coupling of electrons to fluctuating magnetic moments with full SU(2) symmetry, exhibiting characteristic behavior of metals at the approach of the Mott transition. We…

Strongly Correlated Electrons · Physics 2024-03-12 Sergio Ciuchi , Simone Fratini

Atomistic origin of stacking faults in non-close packed systems is a fundamentally distinct mechanism from the well-known close packed structures with ABC stacking, and represents an uncharted territory in material research. According to…

Materials Science · Physics 2024-07-22 Alphy George , T. Sreepriya , Arun Kumar Panda , R. Mythili , Arup Dasgupta , R. Divakar

We investigate how the interplay between a staggered magnetic field and staggered coupling strength affects both ground state and thermal entanglement. Upon analytically calculating thermodynamic quantities and the correlation functions for…

Quantum Physics · Physics 2012-06-26 Jenny Hide , Yoshifumi Nakata , Mio Murao

We uncover two anomalous features in the nonlocal transport behavior of two-dimensional metallic materials with spin-orbit coupling. Firstly, the nonlocal resistance can have negative values and oscillate with distance, even in the absence…

Mesoscale and Nanoscale Physics · Physics 2017-10-04 Chunli Huang , Y. D Chong , Miguel A. Cazalilla

We describe a new mechanism of decoherence in excited atoms as a result of thermal particles scattering by the atomic nucleus. It is based on the idea that a single scattering will produce a sudden displacement of the nucleus, which will be…

Quantum Physics · Physics 2017-06-13 Diego A. Quiñones , Benjamin Varcoe

We report our theoretical predictions on the linear magnetoelectric (ME) effects originating from odd-parity multipoles associated with spontaneous spin and orbital ordering on a diamond structure. We derive a two-orbital model for $d$…

Strongly Correlated Electrons · Physics 2018-01-24 Satoru Hayami , Hiroaki Kusunose , Yukitoshi Motome

The interplay between non-stabilizerness and entanglement in random states is a very rich arena of study for the understanding of quantum advantage and complexity. In this work, we tackle the problem of such interplay in random pure quantum…

Quantum Physics · Physics 2025-07-22 Daniele Iannotti , Gianluca Esposito , Lorenzo Campos Venuti , Alioscia Hamma

The nonequilibrium stationary state of an exclusive genetic switch is considered. The model comprises two competing species and a single binding site which, when bound to by a protein of one species, causes the other species to be…

Statistical Mechanics · Physics 2013-01-24 J. Venegas-Ortiz , M. R. Evans

We present a microscopic theory of fluctuation-mediated pairing mechanism in a two-dimensional extended Hubbard model. In contrast to conventional wisdom, odd-frequency spin-triplet pairing can be stabilized near the spin-density-wave…

Superconductivity · Physics 2008-06-27 Keiji Yada , Seiichiro Onari , Yukio Tanaka , Kazumasa Miyake

We consider the effect of contact interaction in a prototypical quantum spin Hall system of pseudo-spin-1/2 particles. A strong effective magnetic field with opposite directions for the two spin states restricts two-dimensional particle…

Quantum Gases · Physics 2014-02-18 O. Fialko , J. Brand , U. Zuelicke

We summarize some characteristic features of the frustrated magnetic interactions in spin-orbital models adequate for cubic transition metal oxides with orbital degeneracy. A generic tendency towards dimerization, found already in the…

Strongly Correlated Electrons · Physics 2015-06-24 Andrzej M. Oles

We derive a general scaling relation for the anomalous Hall effect in ferromagnetic metals involving multiple competing scattering mechanisms, described by a quadratic hypersurface in the space spanned by the partial resistivities. We also…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 Dazhi Hou , Gang Su , Yuan Tian , Xiaofeng Jin , Shengyuan A. Yang , Qian Niu

We analyze numerically the correspondence between the mechanical action, experienced by a spherical microparticle, and the internal energy flows as well as spatial and polarization inhomogeneity of the light field incident on the particle.…

Optics · Physics 2011-02-22 Aleksandr Bekshaev , Svetlana Sviridova

Eigenstates of local many-body interacting systems that are far from spectral edges are thought to be ergodic and close to being random states. This is consistent with the eigenstate thermalization hypothesis and volume-law scaling of…

Statistical Mechanics · Physics 2022-01-11 Masudul Haque , Paul A. McClarty , Ivan M. Khaymovich

Varied signature splitting phenomena in odd proton rare earth nuclei are investigated. Signature splitting as functions of $K$ and $j$ in the angular momentum projection theory is explicitly shown and compared with those of the particle…

Nuclear Theory · Physics 2009-09-25 Yang Sun , Da Hsuan Feng , Shuxian Wen

The response of matter to fields underlies the physical sciences, from particle physics to astrophysics, and from chemistry to biophysics. We observe an atom's response to an electric quadrupole field to second- and higher orders; this…

Motivated by recent experiments on chemically synthesized magnetic molecular chains we investigate the lowest lying energy band of short spin-$s$ antiferromagnetic Heisenberg chains focusing on effects of open boundaries. By numerical…

Strongly Correlated Electrons · Physics 2013-04-17 A. Machens , N. P. Konstantinidis , O. Waldmann , I. Schneider , S. Eggert

Studying crystal structures of superprotonic phases of alkali metal hydrogen sulfates and selenates, a very unusual phenomenon has been revealed. Dynamically disordered hydrogen atoms with low position occupancies are clearly seen in…

Materials Science · Physics 2009-07-23 Boris V. Merinov