Tina Kahniashvili-Dept of Physics - Carnegie Mellon University

Tina Kahniashvili

Research Professor, Physics

Office: Wean Hall 8313
Phone: 412-268-1818
Fax: 412-681-0648

Education

Dr. Sci. Physics, Lebedev Physics Institute, Russia

Research

In the last decade or so, high quality cosmological data has greatly improved our understanding of physical processes in the Universe. It seems that cosmology is now in a "golden epoch", with observations of the cosmic microwave background (CMB), large scale structure distribution, gravitational lensing , and other observational data supporting a consistent "standard" model of the universe valid from very large scales down to small scales, from today back to the very far past. Cosmological observations planned in the nearest feature will provide even higher quality data, improving our knowledge of the origin, structure, and evolution of the Universe. On the other hand, high energy particle physics and high energy astrophysics are relevant for several issues arising in the cosmology of the early Universe.

My main research areas include investigation of physical processes in the Universe at very early epochs, as well as late times. In particular, I study (i) fundamental symmetries tests at very high energies (early epochs of the universe expansion) using currently available data of astrophysical, cosmological, and particle physics experiments; (ii) gravitational waves signal from very early universe (inflation, phase transitions); (iii) CMB fluctuations in beyond standard cosmological models. I am interested to consider alternative scenarios to explain accelerated expansion of the universe, such as modifications of general relativity (especially massive gravity models). From astrophysics side I am working on cosmological magnetic fields and the origins, evolution, and observable signatures of primordial turbulence.

Selected Publications