نتایج جستجو برای: ansatz method
تعداد نتایج: 1635823 فیلتر نتایج به سال:
In this paper, we investigate the effect of different optical field initial states on performance Tavis-Cummings (T-C) quantum battery. solving dynamical evolution system, found a fast way to solve Bethe ansatz equation. We find that stored energy and average charging power T-C battery are closely related probability distribution state in number states. define quantity called number-state energ...
A Bethe ansatz equation associated with the Lie superalgebra osp(1|2s) is studied. A thermodynamic Bethe ansatz (TBA) equation is derived by the string hypothesis. The high temperature limit of the entropy density is expressed in terms of the solution of the osp(1|2s) version of the Q-system. In particular for fundamental representation case, we also derive a TBA equation from the osp(1|2s) ver...
We construct and solve the boundary Yang-Baxter equation in the RSOS/SOS representation. We find two classes of trigonometric solutions; diagonal and nondiagonal. As a lattice model, these two classes of solutions correspond to RSOS/SOS models with fixed and free boundary spins respectively. Applied to (1+1)-dimenional quantum field theory, these solutions give the boundary scattering amplitude...
Abstract. In this paper we solve one dimensional trapped SU(2) bosons with repulsive δ-function interaction by means of Bethe-ansatz method. The features of ground state and low-lying excited states are studied by numerical and analytic methods. We show that the ground state is an isospin “ferromagnetic” state which differs from spin-1/2 fermions system. There exist three quasi-particles in the...
We study the fluctuations of the position of an impurity in the asymmetric exclusion process on a ring with an arbitrary number of particles and holes. The steady state of this model is exactly known and four different phases appear in the limit of a large system. We calculate the diffusion constant of the impurity by using a matrix product method and also obtain a representation for unequal ti...
The virtual two-loop corrections for Higgs production in gluon fusion are calculated analytically in QCD for arbitrary Higgs and quark masses. Both scalar and pseudo-scalar Higgs bosons are considered. The results are obtained by expanding the known one-dimensional integral representation in terms of mH/mq, and matching it with a suitably chosen ansatz of Harmonic Polylogarithms. This ansatz is...
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