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12 papers · 2 filters
Lagrangian Noether symmetries as canonical transformations
J. Antonio García, J. M. Pons
We prove that, given a time-independent Lagrangian defined in the first tangent bundle of configuration space, every infinitesimal Noether symmetry that is defined in the -tange…
The scaling evolution of cosmological constant
Ilya L. Shapiro, Joan Sola
In quantum field theory the parameters of the vacuum action are subject to renormalization group running. In particular, the ``cosmological constant'' is not a constant in a quantu…
Explicit Zeta Functions for Bosonic and Fermionic Fields on a Noncommutative Toroidal Spacetime
E. Elizalde
Explicit formulas for the zeta functions corresponding to bosonic () and to fermionic () quantum fields living on a noncommutative, partially toroidal spacetime…
Gauge and BRST Generators for Space-Time Non-commutative U(1) Theory
Joaquim Gomis, Kiyoshi Kamimura, Toni Mateos
The Hamiltonian (gauge) symmetry generators of non-local (gauge) theories are presented. The construction is based on the d+1 dimensional space-time formulation of d dimensional no…
Exact Scheme Independence
Jose I. Latorre, Tim R. Morris
Scheme independence of exact renormalization group equations, including independence of the choice of cutoff function, is shown to follow from general field redefinitions, which re…
BPS States and Automorphisms
Jordi Molins, Joan Simon
The purpose of the present paper is twofold. In the first part, we provide an algebraic characterization of several families of BPS states in M theory,…