TY - JOUR
T1 - Derivation of the null energy condition
AU - Parikh, Maulik
AU - Van Der Schaar, Jan Pieter
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/4/3
Y1 - 2015/4/3
N2 - We derive the null energy condition, understood as a constraint on the Einstein-frame Ricci tensor, from world sheet string theory. For a closed bosonic string propagating in a curved geometry, the spacetime interpretation of the Virasoro constraint condition is precisely the null energy condition, to leading nontrivial order in the α′ expansion. Thus the deepest origin of the null energy condition lies in world sheet diffeomorphism invariance.
AB - We derive the null energy condition, understood as a constraint on the Einstein-frame Ricci tensor, from world sheet string theory. For a closed bosonic string propagating in a curved geometry, the spacetime interpretation of the Virasoro constraint condition is precisely the null energy condition, to leading nontrivial order in the α′ expansion. Thus the deepest origin of the null energy condition lies in world sheet diffeomorphism invariance.
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U2 - 10.1103/PhysRevD.91.084002
DO - 10.1103/PhysRevD.91.084002
M3 - Article
AN - SCOPUS:84929206721
SN - 1550-7998
VL - 91
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 8
M1 - 084002
ER -