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Physical Review Letters, ISSN 0031-9007, 11/2011, Volume 107, Issue 19, p. 191103
We study the quantum theory of an O(N) scalar field on de Sitter geometry at leading order in a nonperturbative 1/N expansion. This resums the infinite series... 
PHYSICS, MULTIDISCIPLINARY | INFLATION | CURVED SPACETIME | DYNAMICS | ONE-LOOP CORRECTIONS | CMB | MODEL | General Relativity and Quantum Cosmology | High Energy Physics - Phenomenology | High Energy Physics - Theory | Nuclear Theory | Physics
Journal Article
Physics Letters B, ISSN 0370-2693, 03/2014, Volume 730, pp. 271 - 274
Journal Article
Applied Physics A, ISSN 0947-8396, 11/2017, Volume 123, Issue 11, pp. 1 - 6
Journal Article
Physical Review Letters, ISSN 0031-9007, 01/2019, Volume 122, Issue 1, p. 011302
We study the backreaction of superhorizon fluctuations of a light quantum scalar field on a classical de Sitter geometry by means of the Wilsonian... 
ENERGY | INSTABILITY | SYMMETRY | COSMOLOGICAL CONSTANT | PHYSICS, MULTIDISCIPLINARY | RENORMALIZATION | Variations | Curvature | Spacetime | Relativity
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 02/2013, Volume 87, Issue 4, p. 045020
We propose a new approach to compute correlators of quantum fields in de Sitter space. It is based on nonequilibrium field theory techniques, and exploits de... 
NONEQUILIBRIUM QUANTUM-FIELDS | INFLATION | ASTRONOMY & ASTROPHYSICS | EQUILIBRIUM | DYNAMICS | STATE | FORMALISM | O(N) MODEL | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS | General Relativity and Quantum Cosmology | High Energy Physics - Phenomenology | High Energy Physics - Theory | Nuclear Theory | Physics
Journal Article
Journal Article
Physics Letters B, ISSN 0370-2693, 05/2012, Volume 712, Issue 1-2, pp. 97 - 103
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 10/2015, Volume 92, Issue 8
We investigate scalar field theories in de Sitter space by means of nonperturbative renormalization group techniques. We compute the functional flow equation... 
GAUGE-THEORIES | COSMOLOGICAL PERTURBATIONS | INFLATION | ASTRONOMY & ASTROPHYSICS | EVOLUTION EQUATION | CURVED SPACETIME | DYNAMICS | CMB | RESTORATION | PHYSICS | FLOW | PHYSICS, PARTICLES & FIELDS | Reduction | Euclidean geometry | Approximation | Equivalence | Mathematical analysis | Fluctuation | Cosmology | Scalars
Journal Article
Physics Letters B, ISSN 0370-2693, 12/2013, Volume 727, Issue 4-5, pp. 541 - 547
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 04/2013, Volume 87, Issue 8, p. 085012
We study the O(N) scalar field theory with quartic self-coupling in de Sitter space. When the field is light in units of the expansion rate, perturbative... 
INSTABILITY | ASTRONOMY & ASTROPHYSICS | EQUILIBRIUM | DYNAMICS | SCALAR FIELD | O(N) MODEL | QUANTUM-FIELDS | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS | General Relativity and Quantum Cosmology | High Energy Physics - Phenomenology | High Energy Physics - Theory | Nuclear Theory | Physics
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 11/2015, Volume 92, Issue 10
We study the dynamics of light quantum scalar fields in de Sitter space on superhorizon scales. We compute the self-energy of an O(N) symmetric theory at... 
INFLATION | ASTRONOMY & ASTROPHYSICS | DYNAMICS | ONE-LOOP CORRECTIONS | RESTORATION | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS | Field strength | Gravitation | Dynamic tests | Infrared | Mathematical analysis | Insertion | Cosmology | Scalars
Journal Article
Physical Review Letters, ISSN 0031-9007, 09/2003, Volume 91, Issue 11, pp. 1116011 - 1116014
We present the first study of parametric resonance in quantum field theory from a complete next-to-leading order calculation in a 1/N expansion of the... 
DECAY | PHYSICS, MULTIDISCIPLINARY
Journal Article
Journal Article
The FASEB Journal, ISSN 0892-6638, 07/2011, Volume 25, Issue 7, pp. 2145 - 2155
ABSTRACT Social behavior is a defining mammalian feature that integrates emotional and motivational processes with external rewarding stimuli. It is thus an... 
acetylcholine | prelimbic cortex | executive behavior | gene rescue | Executive behavior | Prelimbic cortex | Acetylcholine | Gene rescue | COGNITIVE FUNCTIONS | SYSTEM | STIMULATION | RAT | BIOCHEMISTRY & MOLECULAR BIOLOGY | MEDIAL FRONTAL-CORTEX | INVOLVEMENT | CELL BIOLOGY | LACKING | BEHAVIORAL FLEXIBILITY | BIOLOGY | EXPRESSION | Immunohistochemistry | Motor Activity - physiology | Iodine Radioisotopes | Humans | Prefrontal Cortex - physiopathology | Male | Genetic Complementation Test | Prefrontal Cortex - pathology | Brain - metabolism | Exploratory Behavior - physiology | Transfection | Social Behavior | HEK293 Cells | Female | Lentivirus - genetics | Bridged Bicyclo Compounds, Heterocyclic - metabolism | Binding, Competitive | Receptors, Nicotinic - metabolism | Brain - physiopathology | Mice, Inbred C57BL | Proto-Oncogene Proteins c-fos - metabolism | Mice, Knockout | Autoradiography | Motor Activity - genetics | Animals | Pyridines - metabolism | Receptors, Nicotinic - physiology | Prefrontal Cortex - metabolism | Brain - pathology | Mice | Receptors, Nicotinic - genetics | Brain | Neurons and Cognition | Neurobiology | Motor Activity | Life Sciences | Exploratory Behavior | Pyridines | Receptors, Nicotinic | Psychology and behavior | Bridged Bicyclo Compounds, Heterocyclic | Lentivirus | Prefrontal Cortex | Proto-Oncogene Proteins c-fos | Cognitive Sciences
Journal Article