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Education:
Ph.D. 2003 Scuola Normale Superiore, Pisa
RESEARCH:
My research activity focuses on theoretical high energy physics and cosmology.
For cosmology, in recent years I have approached several topics including large-distance modifications of General Relativity, bouncing/exotic cosmological scenarios and more formally the null energy condition in General Relativity, the development of an effective field theory for cosmological perturbations, and most recently eternal inflation and related puzzles of deSitter space.
In the area of quantum field theory, I have investigated the possibility of constraining the structure of low-energy effective theories of particle physics (with or without gravity) by postulating clear-cut properties of the ``true'' microscopic physics, like for instance causality and Lorentz invariance.
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SELECTED PUBLICATIONS:
N. Arkani-Hamed, S. Dubovsky, A. Nicolis, E. Trincherini and G.Villadoro,
``A Measure of de Sitter Entropy and Eternal Inflation,''JHEP {\bf 0705}, 055 (2007)
[arXiv:0704.1814 [hep-th]].
P. Creminelli, M. A. Luty, A. Nicolis and L. Senatore,
``Starting the universe: Stable violation of the null energy condition and non-standard cosmologies,''
JHEP 0612, 080 (2006)[arXiv:hep-th/0606090].
A. Adams, N. Arkani-Hamed, S. Dubovsky, A. Nicolis and R. Rattazzi,``Causality, analyticity and an IR obstruction to UV completion,''
JHEP 0610, 014 (2006)[arXiv:hep-th/0602178].
N. Arkani-Hamed, L. Motl, A. Nicolis and C. Vafa,``The string landscape, black holes and gravity as the weakest force,''
JHEP 0706, 060 (2007)[arXiv:hep-th/0601001].
S. Dubovsky, T. Gregoire, A. Nicolis and R. Rattazzi,``Null energy condition and superluminal propagation,''JHEP 0603, 025 (2006)[arXiv:hep-th/0512260].
P. Creminelli, A. Nicolis and M. Zaldarriaga,
``Perturbations in bouncing cosmologies: Dynamical attractor vs scale invariance,''Phys. Rev. D 71, 063505 (2005)
[arXiv:hep-th/0411270].
A. Nicolis and R. Rattazzi,``Classical and quantum consistency of the DGP model,''
JHEP 0406, 059 (2004)[arXiv:hep-th/0404159].
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