University of Cambridge > Talks.cam > HEP phenomenology joint Cavendish-DAMTP seminar > Hawking-like radiation and “temperature” in gravitational scattering beyond the Planck scale

  Browse A-Z

Log in

University Account External (via Google)

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹ️ Information

Hawking-like radiation and “temperature” in gravitational scattering beyond the Planck scale

Download to your calendar using vCal

If you have a question about this talk, please contact Francesco Coradeschi .

I will show how to construct a unitary S-matrix for particle collisions at transplanckian energies, where the formation of a black hole is expected on classical grounds, thus hinting a path towards the resolution of the information paradox. Within the effective diagrams approach by Amati-Ciafaloni-Veneziano and by devising an improved vertex for real graviton emission, we resum emission diagrams to all orders and derive the spectrum of gravitational bremsstrahlung. This spectrum has very peculiar and interesting properties. In fact, the average energy of emitted gravitons decreses at increasing center-of-mass energies, in a way resembling Hawking’s radiation. Furthermore the spectrum suffers an exponential decay ~exp(-omega/T) with a “quasi-temperature” of the order of Hawking’s temperature T_H.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

MR12 Centre for Mathematical Sciences Senior Parlour, Gonville & Caius College Women in Academia: Skills and Practices

Other talks

Optimal metric and approximation of free boundary minimal surfaces The Jiangmen Underground Neutrino Observatory (JUNO): Status and First Physics Results César Milstein Lecture - Title TBC Pancreatic cancer - the clinical challenge;  Why the microenvironment matters during pancreatic cancer progression and treatment Title to be confirmed RNA-Mediated Regulation of Germinal Centre B-Cell Fitness: a tale of two DEAD-box RNA helicases
 

© 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity