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60 papers · 1 filter
Solvable model of strings in a time-dependent plane-wave background
G. Papadopoulos, J. G. Russo, A. A. Tseytlin
We investigate a string model defined by a special plane-wave metric ds^2 = 2dudv - l(u) x^2 du^2 + dx^2 with l(u) = k/u^2 and k=const > 0. This metric is a Penrose limit of some c…
Possible new gamma-ray pulsar detections for AGILE and GLAST missions: The outer gap model look at the Parkes pulsar Catalog
Diego F. Torres, Sebastian E. Nuza
The predictive power of the outer gap model of high energy emission from pulsars is used to analyze the Parkes Multibeam pulsar survey. We find that most of the radio pulsars of th…
The evolutionary minority game with local coordination
E. Burgos, Horacio Ceva, R. P. J. Perazzo
We discuss a modification of the Evolutionary Minority Game (EMG) in which agents are placed in the nodes of a regular or a random graph. A neighborhood for each agent can thus be…
The self-induced approach to decoherence in cosmology
Mario Castagnino, Olimpia Lombardi
In this paper we will present the \QTR{it}{self-induced approach} to decoherence, which does not require the interaction between the system and the environment: decoherence in clos…
The cosmological origin of time-asymmetry
Mario Castagnino, Luis Lara, Olimpia Lombardi
In this paper we address the problem of the arrow of time from a cosmological point of view, rejecting the traditional entropic approach that defines the future direction of time a…
Gluon induced contributions to Z gamma production at hadron colliders
K. L. Adamson, D. de Florian, A. Signer
We study the contribution of gluon induced partonic subprocesses to Z gamma pair production at hadron colliders. These processes contribute only at next-to-next-to-leading order bu…