Results 271 to 280 of about 12,226 (312)

Classical solutions and the vacuum structure in lattice gauge theories

Nuclear Physics B - Proceedings Supplements, 2000
Classical solutions corresponding to monopole-antimonopole pairs are found in 3d and 4d SU(2) and U(1) lattice gauge theories. The stability of these solutions in different theories is studied.
openaire   +1 more source

Structure and Decomposition Theory of Lattices

1990
One of the most natural problems which arise in the investigation of an abstract algebraic system is that of representing the elements of the system in terms of a canonical subset by means of the operations of the system. Thus for a polynomial domain over a field with the operation that of ordinary polynomial multiplication it is the problem of ...
openaire   +2 more sources

Structural diversity in the lattice of equational theories

Algebra Universalis, 1981
This paper is principally concerned with conditions under which various partition lattices are isomorphic to intervals in either the lattice of equational theories extending a given equational theory or the lattice of subtheories of a given equational theory.
openaire   +1 more source

The phase structure of lattice Yang-Mills theories

Il Nuovo Cimento B, 1989
A recently proposed general mechanism for the occurrence of phase transitions is investigated in the context of lattice gauge theories. It leads to the prediction that all zero-temperature lattice gauge theories inD≥3 must undergo a phase transition; it is the limit of the finite temperature deconfining transition.
A. Patrascioiu, E. Seiler, V. Linke, I. O. Stamatescu   +3 more
openaire   +1 more source

On the Structure of the Phases in Lattice Gauge Theories

1980
In recent years a lot of work has been concentrated on the study of non-abelian gauge theories on a lattice 1. The introduction of a lattice is crucial do define the theory in a non-perturbative way: in lattice gauge theories it is possible to use strong coupling techniques such as the high temperature expansion 2, the numerical simulations based on ...
openaire   +1 more source

Truncated Distributive Lattices: Conceptual Structures of Simple-Implicational Theories

Order, 2003
A truncated distributive lattice is a lattice \(L\) with 0 such that there is a distributive lattice \(D\) in which \(L\setminus\{0\}\) is a proper order filter. A simple-implicational theory is a triple \(\mathcal{T}=(M,R,\mathcal{A})\), where \(M\) is a non-empty set, \(R\) is a binary relation on \(M\), and \(\mathcal{A}\) is a set of subsets of \(M\
openaire   +1 more source

Variant actions and phase structure in lattice gauge theory

Physical Review D, 1981
We study a simple generalization of Wilson's SU(2) lattice gauge theory. In various limits the model reduces to the usual SU(2), SO(3), or ${Z}_{2}$ models. Using Monte Carlo techniques on a four-dimensional lattice, we follow the known SO(3) and ${Z}_{2}$ first-order transitions into the phase diagram.
Gyan Bhanot, Michael Creutz
openaire   +1 more source

A lattice theory of morphic effects in crystals of the diamond structure

Annals of Physics, 1970
Abstract A microscopic theory of the electric field induced infrared absorption by crystals of the diamond structure is presented in this paper, together with a determination of the modifications in the first-order Raman spectra of such crystals induced by externally applied electric fields and stresses.
S Ganesan, A.A Maradudin, J Oitmaa
openaire   +1 more source

Phase structure of strongly coupled lattice Yukawa theories

Nuclear Physics B - Proceedings Supplements, 1992
Abstract Using weak and strong Yukawa coupling expansions combined with the mean field theory, we determine the phase structure of Yukawa models with Z (2), U (1), O (4) scalars. We have taken into account all the terms in the relevant expansions up to eighth order.
Toru Ebihara, Kei-Ichi Kondo
openaire   +1 more source

Lattice gauge theory and the structure of the vacuum and hadrons

2008
As indicated at the outset, these lectures could only provide an elementary introduction to lattice QCD and an extremely limited survey of results. With this introduction you are now prepared to undertake the much more detailed treatments in the books by Creutz [2], Rothe [4], and Montvay and Munster [3]. I hope these lectures will enable all of you to
J. W. Negele, H. W. Grießhammer, D. Lehmann   +2 more
openaire   +1 more source