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Simulation data are analyzed for four 3D spin-$1/2$ Ising models: on the FCC lattice, the BCC lattice, the SC lattice and the Diamond lattice. The observables studied are the susceptibility, the reduced second moment correlation length, and…

统计力学 · 物理学 2019-10-10 P. H. Lundow , I. A. Campbell

We investigate the coupling between the magnetic and superconducting order parameters in an 8 m long meander line ("wire") made of a La1.94Sr0.06CuO4 film with a cross section of 0.5 x 100 um^2. The magnetic order parameter is determined…

The process $p+p\to W^\pm W^+ W^-$ with lepton decays of $W$-bosons is shown to be promising for improving conditions for studies of parameter $\lambda$, which is the anomalous triple $W$-bosons interaction coupling constant.

高能物理 - 唯象学 · 物理学 2019-05-08 B. A. Arbuzov , I. V. Zaitsev

Using a renormalized linked-cluster-expansion method, we have extended to order $\beta^{23}$ the high-temperature series for the susceptibility $\chi$ and the second-moment correlation length $\xi$ of the spin-1/2 Ising models on the sc and…

高能物理 - 格点 · 物理学 2016-09-01 P. Butera , M. Comi

The thermodynamic formalism expresses chaotic properties of dynamical systems in terms of the Ruelle pressure $\psi(\beta)$. The inverse-temperature like variable $\beta$ allows one to scan the structure of the probability distribution in…

chao-dyn · 物理学 2017-09-20 C. Appert , H. van Beijeren , M. H. Ernst , J. R. Dorfman

We consider a system with randomly layered ferromagnetic bonds (McCoy-Wu model) and study its critical properties in the frame of mean-field theory. In the low-temperature phase there is an average spontaneous magnetization in the system,…

统计力学 · 物理学 2009-10-31 Bertrand Berche , Pierre Emmanuel Berche , Ferenc Iglói , Gábor Palágyi

Many critical properties of the Hintermann-Merlini model are known exactly through the mapping to the eight-vertex model. Wu [J. Phys. C {\bf 8}, 2262 (1975)] calculated the spontaneous magnetizations of the model on two sublattices by…

统计力学 · 物理学 2015-06-05 Chengxiang Ding , Yancheng Wang , Wanzhou Zhang , Wenan Guo

We investigate two classes of non-minimally coupled curvature-matter models in the FLRW universe with a perfect fluid and analyze their cosmological implications using Supernova Ia, Observed Hubble Data, and Baryon Acoustic Oscillation…

广义相对论与量子宇宙学 · 物理学 2024-12-31 Anirban Chatterjee , Akshay Panda , Abhijit Bandyopadhyay

The Curie-Weiss model is used to study phase transitions in statistical mechanics and has been the object of rigorous analysis in mathematical physics. We analyse the problem of reconstructing the probability measure of a multi-group…

概率论 · 数学 2025-05-29 Miguel Ballesteros , Ramsés H. Mena , Arno Siri-Jégousse , Gabor Toth

Applying the Fermi-Bose equivalence and the boundary state formulation, we study the hetero-junction of two quantum wires. Two quantum wires are described by Tomonaga-Luttinger (TL) liquids with different TL parameters and electrons…

强关联电子 · 物理学 2016-09-21 Taejin Lee

The nonlinear sigma-model and its generalization on N-component spins, the O(N) model, are considered to describe thermodynamics of a quantum quasi-two-dimensional (quasi-2D) Heisenberg antiferromagnet. A comparison with standard spin-wave…

凝聚态物理 · 物理学 2009-10-30 V. Yu. Irkhin , A. A. Katanin

In view of the recent diboson resonant excesses reported by both ATLAS and CMS Collaborations, we suggest that a new weak singlet pseudo-scalar particle, $\eta_W$, may decay into two weak bosons while being produced in gluon fusion at the…

高能物理 - 唯象学 · 物理学 2015-10-28 Giacomo Cacciapaglia , Aldo Deandrea , Michio Hashimoto

The Binder cumulant at the phase transition of Ising models on square lattices with various ferromagnetic nearest and next-nearest neighbour couplings is determined using mainly Monte Carlo techniques. We discuss the possibility to relate…

统计力学 · 物理学 2007-05-23 W. Selke , L. N. Shchur

We investigate the superconductivity of 3D Luttinger semimetals, such as YPtBi, where Cooper pairs are constituted of spin-3/2 quasiparticles. Various pairing mechanisms have already been considered for these semimetals, such as from polar…

超导电性 · 物理学 2019-11-12 Serguei Tchoumakov , Louis J. Godbout , William Witczak-Krempa

The $\beta$-asymmetry parameter $\widetilde{A}$ for the Gamow-Teller decay of $^{60}$Co was measured by polarizing the radioactive nuclei with the brute force low-temperature nuclear-orientation method. The $^{60}$Co activity was cooled…

The constraints on anomalous Higgs boson couplings are investigated through the process $\gamma\gamma \to W^{+}W^{-}H$. Considering the longitudinal and transverse polarization states of the final $W^{+}$ and $W^{-}$ bosons and incoming…

高能物理 - 唯象学 · 物理学 2009-01-16 B. Sahin

We study the dynamics of a heavy particle of mass $M$ moving in a one-dimensional repulsively interacting Fermi gas. The Fermi gas is described using the Luttinger model and bosonization. By transforming to a frame co-moving with the heavy…

凝聚态物理 · 物理学 2009-10-28 A. H. Castro Neto , Matthew P. A. Fisher

We use quantum kinetic theory to calculate the thermoelectric transport properties of the 2D single band Fermi-Hubbard model in the weak coupling limit. For generic filling, we find that the high-temperature limiting behaviors of the…

量子气体 · 物理学 2021-11-03 Thomas G. Kiely , Erich J. Mueller

We address quantum critical systems as a resource in quantum estimation and derive the ultimate quantum limits to the precision of any estimator of the coupling parameters. In particular, if L denotes the size of a system and \lambda is the…

量子物理 · 物理学 2009-11-13 Paolo Zanardi , Matteo G A Paris , Lorenzo Campos Venuti

Based on recent experimental evidence for a spin polarized ground state in the insulating phase of the two-dimensional electron system, we propose that ferromagnetic spin fluctuations lead to an attractive interaction in the triplet channel…

强关联电子 · 物理学 2009-11-07 Claudio Chamon , Eduardo R. Mucciolo , Antonio H. Castro Neto