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Publications Influence

An Alternative to quintessence

- A. Kamenshchik, U. Moschella, V. Pasquier
- Physics
- 1 March 2001

We consider a FRW cosmological model with an exotic fluid known as Chaplygin gas. We show that the resulting evolution of the universe is not in disagreement with the current observation of cosmic… Expand

1,662 23- PDF

TWO-POINT FUNCTIONS AND QUANTUM FIELDS IN DE SITTER UNIVERSE

- J. Bros, U. Moschella
- Physics
- 6 November 1995

We present a theory of general two-point functions and of generalized free fields in d-dimensional de Sitter space-time which closely parallels the corresponding Minkowskian theory. The usual… Expand

162 18- PDF

A general construction of conformal field theories from scalar anti-de Sitter quantum field theories

- M. Bertola, J. Bros, U. Moschella, R. Schaeffer
- Physics
- 30 October 2000

We provide a new general setting for scalar interacting fields on the covering of a ( d+1 )-dimensional AdS spacetime. The formalism is used at first to construct a one-parameter family of field… Expand

33 8

Analyticity Properties and Thermal Effects for General Quantum Field Theory on de Sitter Space-Time

- J. Bros, Henri EpsteinORF RIDa3, U. Moschella
- Physics
- 29 January 1998

Abstract:We propose a general framework for quantum field theory on the de Sitter space-time (i.e. for local field theories whose truncated Wightman functions are not required to vanish). By… Expand

76 6- PDF

The lifetime of a massive particle in a de Sitter universe

- J. Bros, H. Epstein, U. Moschella
- Physics
- 18 December 2006

We study particle decay in de Sitter spacetime as given by first-order perturbation theory in an interacting quantum field theory. We show that for fields with masses above a critical mass mc there… Expand

55 5- PDF

The de Sitter and anti-de Sitter Sightseeing Tour

- U. Moschella
- Physics
- 2006

While celebrating the 100 anniversary of the discovery of special relativity [1], it may not be inappropriate to open a window on the de Sitter universes, as their importance in contemporary physics… Expand

55 4- PDF

Towards a General Theory of Quantized Fields on the Anti-de Sitter Space-Time

- J. Bros, H. Epstein, U. Moschella
- Mathematics, Physics
- 28 November 2001

Abstract: We propose a general framework for studying quantum field theory on the anti-de-Sitter space-time, based on the assumption of positivity of the spectrum of the possible energy operators. In… Expand

34 4- PDF

Particle Decays and Stability on the de Sitter Universe

- J. Bros, H. Epstein, U. Moschella
- Physics
- 18 December 2008

We study particle decay in de Sitter space–time as given by first-order perturbation theory in a Lagrangian interacting quantum field theory. We study in detail the adiabatic limit of the… Expand

51 4- PDF

CAN THE CHAPLYGIN GAS BE A PLAUSIBLE MODEL FOR DARK ENERGY

- V. Gorini, A. Kamenshchik, U. Moschella
- Physics
- 19 September 2002

In this note two cosmological models representing the flat Friedmann Universe filled with a Chaplygin fluid, with or without dust, are analyzed in terms of the recently proposed "statefinder"… Expand

325 3- PDF

Physics of relativistic objects in compact binaries: from birth to coalescence

- M. Colpi, P. Casella, V. Gorini, U. Moschella, A. Possenti
- Physics
- 2009

This book provides a comprehensive, authoritative and timely review of the astrophysical approach to the investigation of gravity theories. Particular attention is paid to strong-field tests of… Expand

122 3- PDF

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