Lattice field theories with an energy current
نویسندگان
چکیده
منابع مشابه
Lattice field theories with an energy current
We investigate a lattice scalar field theory in the presence of a bias favouring the establishment of an energy current, as a model for stationary nonequilibrium processes at low temperature in a non-integrable system. There is a transition at a finite value of the bias to a gapless modulated phase which carries a classical current; however, unlike in similar, integrable, models, quantum effect...
متن کاملDifferential Forms in Lattice Field Theories: An Overview
We provide an overview on the application of the exterior calculus of differential forms to the ab initio formulation of lattice field theories, with a focus on irregular or " random " lattices.
متن کاملLattice Simulations of Nonperturbative Quantum Field Theories
We give a brief pedagogical introduction to Markov chain Monte Carlo simulations of statistical systems and the basics of the φ quantum field theory. We show how to treat φ theory as a statistical system in Euclidean space and perform lattice simulations using both local and cluster Monte Carlo algorithms. We then present the details and results of simulations of φ theory on the lattice in whic...
متن کاملNoncommutativity and Topology within Lattice Field Theories
Theories with noncommutative space-time coordinates represent alternative candidates of grand unified theories. We discuss U(1) gauge theory in 2 and 4 dimensions on a lattice with N sites. The mapping to a U(N) plaquette model in the sense of Eguchi and Kawai can be used for computer simulations. In 2D it turns out that the formulation of the topological charge leads to the imaginary part of t...
متن کاملAnharmonic Analysis of Lattice Field Theories
In a previous paper we showed that a class of real space renormalization group calculations could be reinterpreted as an orthogonal transformation of coordinates followed by an approximate (variational) evaluation of the resulting hamiltonian. Here we shall discuss the orthogonal transform method and concentrate on analytic rather than numerical results. The transform method may ultimately be m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2000
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(99)00567-2