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We develop the idea that, in quantum gravity where the horizon fluctuates, a black hole should have a discrete mass spectrum with concomitant line emission. Simple arguments fix the spacing of theâ€¦ (More)

A theory of gravitation is constructed in which all homogeneous and isotropic solutions are nonsingular, and in which all curvature invariants are bounded. All solutions for which curvatureâ€¦ (More)

- Joel K. Erickson, Robert R. Caldwell, Paul J. Steinhardt, Cristian Armendariz-Picon, Viatcheslav F. Mukhanov
- Physical review letters
- 2002

Quintessence, a time-varying energy component that may account for the accelerated expansion of the universe, can be characterized by its equation of state and sound speed. In this paper, we showâ€¦ (More)

We draw attention to the possibility that inflation (i.e. accelerated expansion) might continue after the end of slow roll, during a period of fast oscillations of the inflaton field Ï†. Thisâ€¦ (More)

- Dmitri K. Novikov, Jens Schmalzing, Viatcheslav F. Mukhanov
- 2000

We consider a cosmological model with nonâ€“ Gaussian initial perturbations, which in principle could be generated in nonâ€“standard inflationary scenarios with two or more scalar fields. In particularâ€¦ (More)

I derive analytically the spectrum of the CMB fluctuations. The final result for Cl is presented in terms of elementary functions with an explicit dependence on the basic cosmological parameters.â€¦ (More)

We determine the s-waves contribution of a scalar field to the four dimensional effective action for arbitrary spherically symmetric external gravitational fields. The result is applied to 4d-blackâ€¦ (More)

We discuss the large-scale structure of the universe in inflationary cosmology and the implications that it may have for the long-term future of civilizations. Although each civilization is doomed toâ€¦ (More)

- Andrei Barvinsky, Yu. V. Gusev, Viatcheslav F. Mukhanov, Dmitriy Nesterov
- 2003

Recently proposed nonlocal and nonperturbative late time behavior of the heat kernel is generalized to curved spacetimes. Heat kernel trace asymptotics is dominated by two terms one of whichâ€¦ (More)

I derive completely analytically the time evolution and final abundances of the light elements (up to 7Be) formed in the big-bang nucleosynthesis.This highlights an interesting physics taking placeâ€¦ (More)