# Richard Holman

## Professor, Physics

**Office:**Wean Hall 7408

**Phone:**412-268-5159

**Fax:**412-681-0648

**Email:**rh4a@andrew.cmu.edu

## Education

Ph.D., Johns Hopkins University## Research

My interests center mainly on the interface between cosmology and particle physics. I have very strong interests in the quantum mechanics/field theory involved in inflationary cosmologies. This has led me to spending a great deal of time developing a formalism that can be used to describe quantum fields in non-equilibrium environments, such as occur during and immediately after an inflationary phase. This formalism has also had very interesting applications to the so-called Dark Energy problem.

I am currently involved in trying to understand how current and future measurements of the Cosmic Microwave Background Radiation could detect effects coming from Planck-Scale physics, as well as constructing models that describe the so-called Dark Energy component of the Universe.

## Selected Publications

- Andreas Albrecht, R. Holman, Benoit J. Richard,
*Spinodal Instabilities and Super-Planckian Excursions in Natural Inflation*, Physical Review Letters 114, 171301 (2015) - Hael Collins, R. Holman, Tereza Vardanyan,
*Renormalizing an initial state*, J. High Energ. Phys. 2014, 1007 (2014) - Nishant Agarwal, R. Holman, Andrew J. Tolley,
*What is the shape of the initial state?*, International Journal of Modern Physics D 22, 1341015 (2013) - D. Boyanovsky, R. Holman,
*On the perturbative stability of quantum field theories in de Sitter space*, Journal of High Energy Physics 5, 047 (2011) - C.P Burgess, L Leblond, R Holman, S Shandera,
*Super-Hubble de Sitter fluctuations and the dynamical RG*, Journal of Cosmology and Astroparticle Physics 03, 033 (2010) - D. Boyanovsky, R. Holman, Jimmy A. Hutasoit,
*Oscillation dynamics of active-unsterile neutrino mixing in a 2+1˜ mixing scheme*, Physical Review D 81, 033009 (2010) - C.P Burgess, R Holman, L Leblond, S Shandera,
*Breakdown of semiclassical methods in de Sitter space*, Journal of Cosmology and Astroparticle Physics 10, 017 (2010) - Hael Collins, R. Holman,
*Trans-Planckian enhancements of the primordial non-Gaussianities*, Physical Review D 80, 043524 (2009) - Hael Collins, R. Holman,
*Trans-Planckian signals from the breaking of local Lorentz invariance*, Physical Review D 77, 105016 (2008) - R Holman, Andrew J Tolley,
*Enhanced non-Gaussianity from excited initial states*, Journal of Cosmology and Astroparticle Physics 05, 001 (2008) - Hael Collins, R. Holman,
*Unparticles and inflation*, Physical Review D 78, 025023 (2008)