TY - JOUR
T1 - Construction of states for quantum fields in nonstatic space-times
AU - Deutsch, David
AU - Najmi, Amir Homayoon
PY - 1983
Y1 - 1983
N2 - We set out the problem of constructing states for quantum field theories in nonstationary space-time backgrounds. We stress that this problem is a fundamental one, not to be confused with the inessential question "what is a particle." We present a formalism, related to that of Ashtekhar and Magnon, in which the problem can be attacked more easily than at present. By way of illustration we express the ansatz of "energy minimization" in our formalism and thereby find its general solution for noninteracting scalar fields.
AB - We set out the problem of constructing states for quantum field theories in nonstationary space-time backgrounds. We stress that this problem is a fundamental one, not to be confused with the inessential question "what is a particle." We present a formalism, related to that of Ashtekhar and Magnon, in which the problem can be attacked more easily than at present. By way of illustration we express the ansatz of "energy minimization" in our formalism and thereby find its general solution for noninteracting scalar fields.
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U2 - 10.1103/PhysRevD.28.1907
DO - 10.1103/PhysRevD.28.1907
M3 - Article
AN - SCOPUS:0001123514
VL - 28
SP - 1907
EP - 1915
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 8
ER -