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86 papers · 1 filter
Electrostatic Decay of Plasma Turbulence
Alberto M. Vasquez, Daniel O. Gomez
The study of the evolution of a suprathermal electron beam traveling through a background plasma is relevant for the physics of solar flares and their associated type III solar rad…
The binary black hole scenario for the BL Lacertae object AO 0235+16
G. E. Romero, J. H. Fan, S. E. Nuza
Recent analysis of the long term radio lightcurve of the extremely variable BL Lacertae object AO 0235+16 by Raiteri et al. (2001) have revealed the presence of recurrent outbursts…
Effects of dissipation on disordered quantum spin models
L. F. Cugliandolo, D. R. Grempel, G. Lozano +1
We study the effects of the coupling to an Ohmic quantum reservoir on the static and dynamical properties of a family of disordered SU(2) spin models in a transverse magnetic field…
Gaussian Decoherence from Random Spin Environments
W. H. Zurek, F. M. Cucchietti, J. P. Paz
We examine an exactly solvable model of decoherence - a spin-system interacting with a collection of environment spins. We show that in this model (introduced some time ago to illu…
The triple collinear limit of one-loop QCD amplitudes
Stefano Catani, Daniel de Florian, German Rodrigo
We consider the singular behaviour of one-loop QCD matrix elements when several external partons become simultaneously parallel. We present a new factorization formula that describ…
Classical invariants and the quantization of chaotic systems
D. A. Wisniacki, E. Vergini, R. M. Benito +1
Long periodic orbits constitute a serious drawback in Gutzwiller's theory of chaotic systems, and then it would be desirable that other classical invariants, not suffering from the…