Bonora, Loriano and Cvitan, Maro and Pallua, Silvio and Smolić, Ivica (2009) Hawking fluxes, Fermionic currents, W(1+infinity) algebra, and anomalies. Physical Review D, 80 (8). pp. 8403412. ISSN 15507998

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Abstract
We complete the analysis carried out in previous papers by studying the Hawking radiation for a Kerr black hole carried to infinity by fermionic currents of any spin. We find agreement with the thermal spectrum of the Hawking radiation for fermionic degrees of freedom. We start by showing that the nearhorizon physics for a Kerr black hole is approximated by an effective twodimensional field theory of fermionic fields. Then, starting from twodimensional currents of any spin that form a W1+∞ algebra, we construct an infinite set of covariant currents, each of which carries the corresponding moment of the Hawking radiation. All together they agree with the thermal spectrum of the latter. We show that the predictive power of this method is based not on the anomalies of the higherspin currents (which are trivial) but on the underlying W1+∞ structure. Our results point toward the existence in the nearhorizon geometry of a symmetry larger than the Virasoro algebra, which very likely takes the form of a W∞ algebra.
Item Type:  Article 

Keywords:  Hawking radiation, Winfinity algebra, anomalies 
Date:  October 2009 
Subjects:  NATURAL SCIENCES > Physics 
Additional Information:  Copyright (2009) by the American Physical Society. 
Divisions:  Faculty of Science > Department of Physics 
Project code:  11909829301016 
Publisher:  American Physical Society 
Depositing User:  Gordana Stubičan Ladešić 
Date Deposited:  30 May 2014 16:11 
Last Modified:  30 May 2014 16:11 
URI:  http://digre.pmf.unizg.hr/id/eprint/2025 
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