Particle theory

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Resummation of non-global QCD observables

(2001)

Authors:

M Dasgupta, GP Salam

Convergent Yang-Mills Matrix Theories

Journal of High Energy Physics (2001)

Authors:

JF Wheater, Peter Austing

On the Absorption by Near-Extremal Black Branes

(2001)

Authors:

G Policastro, A Starinets

Shear viscosity of strongly coupled N=4 supersymmetric Yang-Mills plasma

(2001)

Authors:

G Policastro, DT Son, AO Starinets

Evidence for an inflationary phase transition from the LSS and CMB anisotropy data

NUCL PHYS B-PROC SUP 95 (2001) 66-69

Authors:

J Barriga, E Gaztanaga, MG Santos, S Sarkar

Abstract:

In the light of the recent Boomerang and Maxima observations of the CMB which show an anomalously low second acoustic peak, we reexamine the prediction by Adams et al (1997) that this would be the consequence of a 'step' in the primordial spectrum induced by a spontaneous symmetry breaking phase transition during primordial inflation. We demonstrate that a deviation from scale-invariance around k similar to 0.1 h Mpc(-1) can simultaneously explain both the feature identified earlier in the APM galaxy power spectrum as well the recent CMB anisotropy data, with a baryon density consistent with the BBN value. Such a break also allows a good fit to the data on cluster abundances even for a critical density matter-dominated universe with sere cosmological constant.