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16 papers
Black Hole Attractor Varieties and Complex Multiplication
Monika Lynker, Vipul Periwal, Rolf Schimmrigk
Black holes in string theory compactified on Calabi-Yau varieties a priori might be expected to have moduli dependent features. For example the entropy of the black hole might be e…
Nonperturbative effects in deformation quantization
Vipul Periwal
The Cattaneo-Felder path integral form of the perturbative Kontsevich deformation quantization formula is used to explicitly demonstrate the existence of nonperturbative correction…
Dynamical truncation of the string spectrum at finite N
Gilad Lifschytz, Vipul Periwal
We exhibit a nonperturbative background independent dynamical truncation of the string spectrum and a quantization of the string coupling constant directly from the Hamiltonian gov…
A toy model of Polyakov duality
Vipul Periwal
Polyakov has conjectured that Yang-Mills theory should be equivalent to a noncritical string theory. I pointed out, based on the work of Marchesini, Ishibashi, Kawai and collaborat…
String field theory Hamiltonians from Yang-Mills theories
Vipul Periwal
Marchesini showed that the Fokker-Planck Hamiltonian for Yang-Mills theories is the loop operator. Jevicki and Rodrigues showed that the Fokker-Planck Hamiltonian of some matrix mo…
Cosmological and astrophysical tests of quantum gravity
Vipul Periwal
Physics in the vicinity of an ultraviolet stable fixed point of a quantum field theory is parametrized by a renormalization group invariant macroscopic length scale, the correlatio…