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PRODID:https://murmitoyen.com/events/vanille/udem/
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UID:69df3412cbbc7
DTSTAMP:20260415T024538
DTSTART:20140922T133000
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20140922T143000
URL:https://murmitoyen.com/events/vanille/udem/detail/513771
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Complex path -- a semi-classical probe of quantum effects
DESCRIPTION:Dr. Suprit Singh IUCAA\, Pune\, IndeI will discuss the notion o
 f an effective\, average\, quantum mechanical path which is a solution of 
 the dynamical equations obtained by extremizing the quantum effective acti
 on. Since the effective action can\, in general\, be complex\, the effecti
 ve path will also\, in general\, be complex. The imaginary part of the eff
 ective action is known to be related to the probability of particle creati
 on by an external source and hence one expects the imaginary part of the e
 ffective path also to contain information about particle creation. We can 
 identify such features using simple examples including that of effective p
 ath through the black hole horizon leading to thermal radiation.
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