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CERN Document Server 2,008 records found  1 - 10nextend  jump to record: Search took 0.54 seconds. 
1.
(100)
Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Bispectrum / Bartolo, Nicola (Padua U. ; INFN, Padua) ; Fasiello, Matteo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Matarrese, Sabino (Padua U. ; INFN, Padua) ; Riotto, Antonio (INFN, Padua ; CERN)
The methods of effective field theory are used to study generic theories of inflation with a single inflaton field and to perform a general analysis of the associated non-Gaussianities. We investigate the amplitudes and shapes of the various generic three-point correlators, the bispectra, which may be generated by different classes of single-field inflationary models. [...]
arXiv:1004.0893; CERN-PH-TH-2010-076.- 2010 - 30 p. - Published in : JCAP 8 (2010) 008 External link: Preprint
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2.
(91)
Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Trispectrum / Bartolo, Nicola (Padua U. ; INFN, Padua) ; Fasiello, Matteo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Matarrese, Sabino (Padua U. ; INFN, Padua) ; Riotto, Antonio (INFN, Padua ; CERN)
We perform the analysis of the trispectrum of curvature perturbations generated by the interactions characterizing a general theory of single-field inflation obtained by effective field theory methods. We find that curvature-generated interaction terms, which can in general give an important contribution to the amplitude of the four-point function, show some new distinctive features in the form of their trispectrum shape-function. [...]
arXiv:1006.5411; CERN-PH-TH-2010-146.- 2010 - 29 p. - Published in : JCAP 09 (2010) 035 Fulltext: PDF; External link: Preprint
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3.
(76)
Tilt and Running of Cosmological Observables in Generalized Single-Field Inflation / Bartolo, Nicola (Padua U. ; INFN, Padua) ; Fasiello, Matteo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Matarrese, Sabino (Padua U. ; INFN, Padua) ; Riotto, Antonio (INFN, Padua ; CERN)
Employing an effective field theory approach to inflationary perturbations, we analyze in detail the effect of curvature-generated Lagrangian operators on various observables, focusing on their running with scales. At quadratic order, we solve the equation of motion at next-to-leading leading order in a generalized slow-roll approximation for a very general theory of single-field inflation. [...]
arXiv:1010.3993; CERN-PH-TH-2010-238.- 2010 - 20 p. - Published in : JCAP 12 (2010) 026 Fulltext: PDF; External link: Preprint
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4.
(50)
Constraints on multifield inflation from the BOSS galaxy survey / Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We use redshift-space galaxy clustering data from the BOSS survey to constrain local primordial non-Gaussianity (LPNG). This is of particular importance due to the consistency relations, which imply that a detection of LPNG would rule out all single-field inflationary models. [...]
arXiv:2204.01781; CERN-TH-2022-055.- 2022-08-03 - 20 p. - Published in : Phys. Rev. D 106 (2022) 043506 Fulltext: PDF;
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5.
(42)
Constraints on Single-Field Inflation from the BOSS Galaxy Survey / Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton U. ; Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
Non-local primordial non-Gaussianity (NLPNG) is a smoking gun of interactions in single-field inflationary models, and can be written as a combination of the equilateral and orthogonal templates. We present the first constraints on these from the redshift-space galaxy power spectra and bispectra of the Baryon Oscillation Spectroscopic Survey (BOSS) data. [...]
arXiv:2201.07238; CERN-TH-2022-005.- 2022-07-06 - 13 p. - Published in : Phys. Rev. Lett. 129 (2022) 021301 Fulltext: 2201.07238 - PDF; PhysRevLett.129.021301 - PDF;
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6.
(42)
Detectability of the effect of Inflationary non-Gaussianity on halo bias / Verde, Licia (CERN ; ICREA, Barcelona) ; Matarrese, Sabino (INFN, Padua ; Padua U.)
We consider the description of the clustering of halos for physically-motivated types of non-Gaussian initial conditions. In particular we include non-Gaussianity of the type arising from single field slow-roll, multi fields, curvaton (local type), higher-order derivative-type (equilateral), vacuum-state modifications (enfolded-type) and horizon-scale GR corrections type. [...]
arXiv:0909.3224.- 2009 - 6 p. - Published in : Astrophys. J. 706 (2009) L91-L95 Fulltext: PDF; External link: Preprint
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7.
(40)
The Physical Squeezed Limit: Consistency Relations at Order q^2 / Creminelli, Paolo (ICTP, Trieste) ; Perko, Ashley (Stanford U., ITP) ; Senatore, Leonardo (Stanford U., ITP ; KIPAC, Menlo Park ; SLAC ; CERN) ; Simonović, Marko (SISSA, Trieste ; INFN, Trieste) ; Trevisan, Gabriele (SISSA, Trieste ; INFN, Trieste)
In single-field models of inflation the effect of a long mode with momentum q reduces to a diffeomorphism at zeroth and first order in q. This gives the well-known consistency relations for the n-point functions. [...]
arXiv:1307.0503.- 2013-11-07 - 18 p. - Published in : JCAP 11 (2013) 015 Fulltext: PDF; External link: Preprint
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8.
(40)
Inflation and dark matter in two Higgs doublet models / Gong, Jinn-Ouk (CERN) ; Kang, Sin Kyu (Seoultech, Seoul) ; Lee, Hyun Min (CERN)
We consider the Higgs inflation in the extension of the Standard Model with two Higgs doublets coupled to gravity non-minimally. In the presence of an approximate global U(1) symmetry in the Higgs sector, both radial and angular modes of neutral Higgs bosons drive inflation where large non-Gaussianity is possible from appropriate initial conditions on the angular mode. [...]
arXiv:1202.0288; CERN-PH-TH-2012-024.- 2012 - 28 p. - Published in : JHEP 04 (2012) 128 Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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9. Recommendations of the Finance Committee to Council as to the Financing of the 1965 Supplementary Programme
Recommandations du Comité des Finances au Conseil au sujet du financement du programme supplémentaire pour 1965
CERN/0572
28th Session of Council ; 1964
English: PDF
French: PDF
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10. Expenditure in Excess of Provisions
Dépassements de crédits
CERN/FC/0726/Add.
64th Meeting of Finance Committee ; 1964
English: PDF
French: PDF
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