[hep-th] Studentski seminar u petak

[Branislav Cvetkovic]

Postovane kolege,

U petak 19. jula u 11h  na Institutu za fiziku Tijana Radenkovic ce 
odrzati seminar pod naslivom "Construction of one-particle states in a 
curved spacetime in the case of Klein-Gordon field". Seminar se odrzava 
u okviru ispita  Kvantovanje u krivom prostoru.

Pozdrav Branislav

Abstact:

We'll see how quantum field theory of a free Klein-Gordon field in
Minkowski spacetime can be formulated without using a plane wave
expansion, the reformulation that is of crucial importance for the
construction of QFT in curved spacetime. It is necessary that the causal
behavior of the curved spacetime be sufficiently well behaved that the
space of solutions to the classical field equations have the same basic
structure as in Minkowski spacetime, what ensures the condition of
global hyperbolicity. The construction of quantum field theory in
curved, globally hyperbolic spacetimes will be presented [1]. It will
also be demonstrated how in the case of a Klein-Gordon scalar field
propagating in an arbitrary, nonglobally hyperbolic static spacetime, a
physically sensible, fully deterministic dynamical evolution
prescription can be given, as described in Wald's paper [2].

[1] Robert M.Wald "Quatum Field Theory in Curved Spacetime and Black
Hole Thermodynamics", University of Chicago Press; 1 edition (1994).
[2] Robert M. Wald "Dynamics in nonglobally hyperbolic static
space-times", J.Math.Phys. 21 (12), (1980).
-- 
Institute of Physics Belgrade
Pregrevica 118, 11080 Belgrade, Serbia
http://www.ipb.ac.rs/