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53 papers · 1 filter
Eigenvalues of the Dirac Operator on Manifolds with Boundary
Oussama Hijazi, Sebastian Montiel, Xiao Zhang
Under standard local boundary conditions or certain global APS boundary conditions, we get lower bounds for the eigenvalues of the Dirac operator on compact spin manifolds with bou…
Temporally disordered Ising models
Juan J. Alonso, Miguel A. Munoz
We present a study of the influence of different types of disorder on systems in the Ising universality class by employing both a dynamical field theory approach and extensive Mont…
Derivative expansion for the effective action of chiral gauge fermions. The abnormal parity component
L. L. Salcedo
Explicit exact formulas are presented, for the leading order term in a strict chiral covariant derivative expansion, for the abnormal parity component of the effective action of tw…
Derivative expansion for the effective action of chiral gauge fermions. The normal parity component
L. L. Salcedo
Explicit exact formulas are presented, up to fourth order in a strict chiral covariant derivative expansion, for the normal parity component of the Euclidean effective action of ev…
Sandpiles and absorbing-state phase transitions: recent results and open problems
Miguel A. Munoz, Ronald Dickman, Romualdo Pastor-Satorras +2
We review some recent results on the relations between sandpiles and a class of absorbing state phase transitions. We use the concept of fixed energy sandpiles (FES), in which exte…
Duality and Rational Modules in Hopf Algebras over Commutative Rings
J. Y. Abuhlail, J. Gomez-Torrecillas, F. J. Lobillo
Let be an algebra over a commutative ring . If is noetherian and is pure in , then the categories of rational left -modules and right -comodul…