Second Cluster Integral and Excluded Volume Effects for the Pion Gas [PDF]
, 2000 The quantum mechanical formula for Mayer's second cluster integral for the gas of relativistic particles with hard-core interaction is derived. The proper pion volume calculated with quantum mechanical formula is found to be an order of magnitude larger ...
A. Dobado +31 more
core +5 more sources
Typical medium dynamical cluster approximation for the study of Anderson localization in three dimensions [PDF]
, 2014 We develop a systematic typical medium dynamical cluster approximation that provides a proper description of the Anderson localization transition in three dimensions (3D).
Chinedu Ekuma +5 more
semanticscholar +1 more source
Microcanonical cluster approximations
Physics Letters B, 1985 Abstract A method of entropy estimates due to Kikuchi is generalized from Ising systems to Z 2 gauge models. This method is explicitly gauge invariant. The results of the approximation are compared to Monte Carlo data and strong coupling expansions.
Herbert Neuberger, Cyrus Taylor
openaire +1 more source
Хімія, фізика та технологія поверхні, 2019 By the density functional theory method with the exchange-correlation functional B3LYP, the basis set 6-31G(d,p) and Grimme dispersion corrections, the energy values has been calculated of intermolecular interaction between adjacent polyamide fragments,
E. M. Demianenko +6 more
doaj +1 more source
Dual-fermion approach to the Anderson-Hubbard model [PDF]
, 2016 We apply the recently developed dual fermion algorithm for disordered interacting systems to the Anderson-Hubbard model. This algorithm is compared with dynamical cluster approximation calculations for a one-dimensional system to establish the quality of
Haase, P. +4 more
core +3 more sources
Mott transition in the triangular lattice Hubbard model: A dynamical cluster approximation study [PDF]
, 2014 Based on dynamical cluster approximation (DCA) quantum Monte Carlo simulations, we study the interaction-driven Mott metal-insulator transition (MIT) in the half-filled Hubbard model on the anisotropic two-dimensional triangular lattice, where the degree
H. Dang +4 more
semanticscholar +1 more source
Study of off-diagonal disorder using the typical medium dynamical cluster approximation [PDF]
, 2014 We generalize the typical medium dynamical cluster approximation (TMDCA) and the local Blackman, Esterling, and Berk (BEB) method for systems with off-diagonal disorder.
H. Terletska +5 more
semanticscholar +1 more source
On the Relation between Equation-of-Motion Coupled-Cluster Theory and the GW Approximation. [PDF]
Journal of Chemical Theory and Computation, 2018 We discuss the analytic and diagrammatic structure of ionization potential (IP) and electron affinity (EA) equation-of-motion coupled-cluster (EOM-CC) theory, in order to put it on equal footing with the prevalent GW approximation. The comparison is most
Malte F. Lange, Timothy C. Berkelbach
semanticscholar +1 more source
A Fairness Index Based on Rate Variance for Downlink Non-Orthogonal Multiple Access System
Future Internet, 2022 Aiming at the resource allocation problem of a non-orthogonal multiple access (NOMA) system, a fairness index based on sample variance of users’ transmission rates is proposed, which has a fixed range and high sensitivity.
Jie Yang, Jiajia Zhu, Ziyu Pan
doaj +1 more source
Two-particle correlations in a dynamic cluster approximation with continuous momentum dependence: Superconductivity in the two-dimensional Hubbard model [PDF]
, 2014 The DCA(+) algorithmwas recently introduced by Stear, Maier, and Schulthess [Phys. Rev. B 88, 115101 (2013)] to extend the dynamic cluster approximation (DCA) with a continuous lattice self-energy in order to achieve better convergence with cluster size.
Peter Staar, T. Maier, T. Schulthess
semanticscholar +1 more source