Particle production in matrix cosmology

Sumit R. Das, Joshua L. Davis, Finn Larsen, Partha Mukhopadhyay

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


We consider cosmological particle production in 1+1 dimensional string theory. The process is described most efficiently in terms of anomalies, but we also discuss the explicit mode expansions. In matrix cosmology the usual vacuum ambiguity of quantum fields in time-dependent backgrounds is resolved by the underlying matrix model. This leads to a finite energy density for the "in" state which cancels the effect of anomalous particle production.

Original languageEnglish
Article number044017
JournalPhysical review D
Issue number4 B
StatePublished - Aug 2004

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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