Status Confirmed Seminar Series LPTENS-HE Subjects hep-th Date Friday 22 November 2019 Time 14:00 Institute LPTENS Seminar Room Bibliotheque Joel Scherk Speaker's Last Name Manenti Speaker's First Name Andrea Speaker's Email Address Speaker's Institution EPFL Title Thermal CFTs in momentum space Abstract I show some aspects of conformal field theories at finite temperature in momentum space. First I provide a formula for the Fourier transform of a thermal conformal block and study its analytic properties. In particular I show that the Fourier transform vanishes when the conformal dimension and spin are those of a "double twist" operator $\Delta = 2\Delta_\phi + \ell + 2n$. I present a simple example to illustrate this property. Then, by analytically continuing to Lorentzian signature, I show that the spectral density at high spatial momenta has support on the spectrum condition $|\omega| > |k|$. This leads to a series of sum rules. arXiv Preprint Number Comments Attachments

To Generate a poster for this seminar : [ Postscript | PDF ]

 [ Annonces ]    [ Abonnements ]    [ Archive ]    [ Aide ]    [ JavaScript requis ] [ English version ]