Solid Adiabatic Modes and Soft Theorems

Add to your list(s) Download to your calendar using vCal

• Sadra Jazayeri (University of Cambridge)
• Friday 30 November 2018, 13:00-14:00
• Pavilion B Potter Room (B1.19).

If you have a question about this talk, please contact Nathan Johnson-McDaniel.

Cosmological observations, from the cosmic microwave background to large-scale structure, indicate that the initial condition for inhomogeneities in our universe has been adiabatic, namely, in the long wavelength limit, any perturbation in our universe locally mimics a coordinate change.

I first review the concept of adiabatic modes; I demonstrate two empirical consequences of adiabaticity: conservation of the curvature perturbation and soft theorems for single field inflation.

Adiabatic modes for perfect fluids and scalar fields have been extensively studied in the literature. In this talk, I investigate a solid coupled to gravity; I study its adiabatic modes and their corresponding soft theorems. Although almost every deformation in a solid—even in the long wavelength limit—is non-adiabatic, I will show that a solid exhibits infinitely many adiabatic modes.

This talk is part of the DAMTP Friday GR Seminar series.

This talk is included in these lists:

• All CMS events
• All Talks (aka the CURE list)
• CMS Events
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• DAMTP Friday GR Seminar
• DAMTP info aggregator
• Interested Talks
• Kavli Institute for Cosmology Talk Lists
• Pavilion B Potter Room (B1.19)
• Priscilla
• School of Physical Sciences
• bld31

Note that ex-directory lists are not shown.