Search Results - "Mercuri, Simone"

Peccei-Quinn mechanism in gravity and the nature of the Barbero-Immirzi parameter by Mercuri, Simone

“…A general argument provides the motivation to consider the Barbero-Immirzi parameter as a field. The specific form of the geometrical effective action allows…”
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Interaction of the Barbero-Immirzi field with matter and pseudoscalar perturbations by Mercuri, Simone, Taveras, Victor

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Modifications in the spectrum of primordial gravitational waves induced by instantonic fluctuations by Mercuri, Simone

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Fermions in the Ashtekar-Barbero connection formalism for arbitrary values of the Immirzi parameter by Mercuri, Simone

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Unbalanced circulating Humanin levels and cardiovascular risk in chronic hemodialysis patients: a pilot, prospective study by Bolignano, Davide, Greco, Marta, Presta, Pierangela, Duni, Anila, Zicarelli, Mariateresa, Mercuri, Simone, Pappas, Efthymios, Lakkas, Lampros, Musolino, Michela, Naka, Katerina K., Pugliese, Sara, Misiti, Roberta, Foti, Daniela Patrizia, Andreucci, Michele, Coppolino, Giuseppe, Dounousi, Evangelia

“…Background Mortality and cardiovascular (CV) risk prediction in individuals with end-stage kidney disease (ESKD) on chronic hemodialysis (HD) remains…”
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From the Einstein-Cartan to the Ashtekar-Barbero canonical constraints, passing through the Nieh-Yan functional by Mercuri, Simone

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Barbero-Immirzi field in canonical formalism of pure gravity by Calcagni, Gianluca, Mercuri, Simone

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Modifications in the Spectrum of Primordial Gravitational Waves Induced by Instantonic Fluctuations by Mercuri, Simone

“…Phys.Rev.D84:044035,2011 Vacuum to vacuum instantonic transitions modify the power spectrum of primordial gravitational waves. We evaluate the new form of the…”
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Introduction to Loop Quantum Gravity by Mercuri, Simone

“…PoS ISFTG:016, 2009 The questions I have been asked during the 5th International School on Field Theory and Gravitation, have compelled me to give an account…”
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Peccei--Quinn mechanism in gravity and the nature of the Barbero--Immirzi parameter by Mercuri, Simone

“…Phys.Rev.Lett.103:081302,2009 A general argument provides the motivation to consider the Barbero--Immirzi parameter as a field. The specific form of the…”
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A possible topological interpretation of the Barbero-Immirzi parameter by Mercuri, Simone

“…A possible topological interpretation of the Barbero-Immirzi parameter is proposed. Classically, by generalizing the Holst action to torsional spacetimes, we…”
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From the Einstein-Cartan to the Ashtekar-Barbero canonical constraints, passing through the Nieh-Yan functional by Mercuri, Simone

“…Phys.Rev.D77:024036,2008 The Ashtekar-Barbero constraints for General Relativity with fermions are derived from the Einstein-Cartan canonical theory rescaling…”
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Nieh-Yan Invariant and Fermions in Ashtekar-Barbero-Immirzi Formalism by Mercuri, Simone

“…In order to introduce an interaction between gravity and fermions in the Ashtekar-Barbero-Immirzi formalism without affecting classical dynamics a non-minimal…”
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A solution of the strong CP problem via the Peccei-Quinn mechanism through the Nieh-Yan modified gravity and cosmological implications by Lattanzi, Massimiliano, Mercuri, Simone

“…Phys.Rev.D81:125015,2010 By identifying the recently introduced Barbero-Immirzi field with the QCD axion, the strong CP problem can be solved through the…”
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A solution of the strong C P problem via the Peccei-Quinn mechanism through the Nieh-Yan modified gravity and cosmological implications by Lattanzi, Massimiliano, Mercuri, Simone

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The Immirzi Parameter as an Instanton Angle by Mercuri, Simone, Randono, Andrew

“…Class.Quant.Grav.28:025001,2011 The Barbero-Immirzi parameter is a one parameter quantization ambiguity underpinning the loop approach to quantum gravity that…”
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Fermions in Ashtekar-Barbero Connections Formalism for Arbitrary Values of the Immirzi Parameter by Mercuri, Simone

“…Phys.Rev. D73 (2006) 084016 The Ashtekar-Barbero-Immirzi formulation of General Relativity is extended to include spinor matter fields. Our formulation applies…”
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Interaction of the Barbero--Immirzi Field with Matter and Pseudo-Scalar Perturbations by Mercuri, Simone, Taveras, Victor

“…Phys.Rev.D80:104007,2009 In Loop Quantum Gravity the classical point of departure is the Einstein-Hilbert action modified by the addition of the so-called…”
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Barbero-Immirzi field in canonical formalism of pure gravity by Calcagni, Gianluca, Mercuri, Simone

“…Phys.Rev.D79:084004,2009 The Barbero-Immirzi (BI) parameter is promoted to a field and a canonical analysis is performed when it is coupled with a Nieh-Yan…”
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On the Frame Fixing in Quantum Gravity by Mercuri, Simone, Montani, Giovanni

“…We provide a discussion about the necessity to fix the reference frame before quantizing the gravitational field. Our presentation is based on stressing how…”
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