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12 papers · 1 filter
Basics of M-Theory
A. Miemiec, I. Schnakenburg
This is a review article of eleven dimensional supergravity in which we present all necessary calculations, namely the Noether procedure, the equations of motion (without neglectin…
Closure relations for totally nonnegative cells in G/P
Konstanze Rietsch
The totally nonnegative part of a partial flag variety G/P is known to have a decomposition into semi-algebraic cells. We show that the closure of a cell is again a union of cells…
Quantum noise and stochastic reduction
Dorje C. Brody, Lane P. Hughston
In standard nonrelativistic quantum mechanics the expectation of the energy is a conserved quantity. It is possible to extend the dynamical law associated with the evolution of a q…
Concepts of Renormalization in Physics
Jean Alexandre
A non technical introduction to the concept of renormalization is given, with an emphasis on the energy scale dependence in the description of a physical system. We first describe…
Activated aging dynamics and negative fluctuation-dissipation ratios
Peter Mayer, Sébastien Léonard, Ludovic Berthier +2
In glassy materials aging proceeds at large times via thermal activation. We show that this can lead to negative dynamical response functions and novel and well-defined violations…
Algebras of Measurements: the logical structure of Quantum Mechanics
Daniel Lehmann, Kurt Engesser, Dov M. Gabbay
In Quantum Physics, a measurement is represented by a projection on some closed subspace of a Hilbert space. We study algebras of operators that abstract from the algebra of projec…