Skip to main navigation Skip to main content
The University of Southampton
STAG Research Centre

String Theory seminar - Zachary Kenton Seminar

Time:
13:00 - 14:00
Date:
20 April 2016
Venue:
54/10037 (10B)

For more information regarding this seminar, please email Da-Wei Pang at [email protected] .

Event details

Soft limits in multi-field inflation

Soft limits of inflationary correlation functions are sensitive to the number of light fields during inflation. I will begin with the calculation of the soft (squeezed) limit of the bispectrum in multifield inflation. I will then discuss the soft limits of the trispectrum and higher n-point functions. I'll show novel relations and inequalities between soft limits of n-point functions and soft limits of lower-point functions. We apply our results to observational probes and compare our results with previous formulae, finding a 20% theoretical correction to observable parameters for squeezings relevant to future cosmological experiments. This work is based on our paper arXiv:1507.08629 and work soon to appear.

Speaker information

Zachary Kenton , Queen Mary.

Privacy Settings
Powered by Fruition