Journal
PHYSICAL REVIEW D
Volume 101, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.106022
Keywords
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Funding
- U.S. Department of Energy (DOE) [DE-SC0009919]
- Simons Foundation [568420]
- Ambrose Monell Foundation
- DOE [DE-SC0009988]
- Inamori Fellowship
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We improve the recently discovered upper and lower bounds on the O(1) correction to the Cardy formula for the density of states integrated over an energy window (of width 2 delta), centered at high energy in two-dimensional unitary and modular invariant conformal field theory. We prove optimality of the lower bound for delta -> 1(-). We prove a conjectured upper bound on the asymptotic gap between two consecutive Virasoro primaries for a central charge greater than 1, demonstrating it to be 1. Furthermore, a systematic method is provided to establish a limit on how tight the bound on the O(1) correction to the Cardy formula can be made using bandlimited functions. The techniques and the functions used here are of generic importance whenever the Tauberian theorems are used to estimate some physical quantities.
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