Lorenzo Sorbo

Email: sorbo@physics.umass.edu

Physics Department
1127E Lederle Graduate Research Tower
University of Massachusetts
Amherst, MA 01003

Phone: 413 545-1761

Personal Homepage

Ph.D Institution and Year: 

International Scool of Advanced Studies, Trieste, Italy (2001)

Research Area: 

High Energy Theory, Cosmology

Research Interest: 

My research focuses on the theoretical aspects of cosmology, and on what cosmology can tell about the physics that lies beyond the Standard Model of fundamental interactions. By looking at the sky, indeed, we see many evidences of the existence of a physics beyond the Standard Model. Such physics has to account for the origin of the baryon asymmetry of our Universe, the presence of dark matter, the current and the primordial phases of accelerated expansion of the Universe.

I am presently interested in the study of primordial inflation, with particular emphasis on the case in which many fields play a role. I am also studying issues related to the current acceleration of the Universe, especially the possibility that it could be due to a long distance modification of the gravity law. Finally, I am analyzing properties of quantum fields on nontrivial spacetimes, by making use of the conjectured duality between the Randall-Sundrum model and a Conformal Field Theory coupled to gravity.

Selected Publications:

1. N-flationary magnetic fields. Mohamed M. Anber, Lorenzo Sorbo (Massachusetts U., Amherst) . Jun 2006. 12pp. Published in JCAP 0610:018,2006. Archive: astro-ph/0606534
2. "LOCALLY LOCALIZED GRAVITY: THE INSIDE STORY," Nemanja Kaloper, Lorenzo Sorbo, JHEP 0508:070,2005 [Archive: hep-th/0507191].
3. "CAN THE UNIVERSE AFFORD INFLATION?," Andreas Albrecht, Lorenzo Sorbo, Phys. Rev. D 70:063528, 2004 [Archive: hep-th/0405270].
4. "COSMOLOGY OF A BRANE RADIATING GRAVITONS INTO THE EXTRA DIMENSION," David Langlois, Lorenzo Sorbo, Maria Rodriguez-Martinez, Phys. Rev. Lett. 89:171301, 2002 [Archive: hep-th/0206146].
5. "NONTHERMAL PRODUCTION OF GRAVITINOS AND INFLATINOS" Hans Peter Nilles, M. Peloso, L. Sorbo, Phys. Rev. Lett. 87:051302, 2001 [Archive: hep-ph/0102264].
6. "BARYOGENESIS VERSUS PROTON STABILITY IN THEORIES WITH EXTRA DIMENSIONS," Antonio Masiero, Marco Peloso, Lorenzo Sorbo, Rula Tabbash, Phys. Rev. D 62:063515, 2000 [Archive: hep-ph/0003312].