SCOAP3 Repository 10 records found  Search took 0.02 seconds. 
1. Platonic field theories / Zinati, Riccardo ; Codello, Alessandro ; Gori, Giacomo
We study renormalization group (RG) fixed points of scalar field theoin order to get access to the corresponding RG beta functions, we derive general multicomponent beta functionals β V and β Z in the aforementioned upper critical dimensions, most of which are novel. [...]
Published in JHEP 1904 (2019) 152 10.1007/JHEP04(2019)152 arXiv:1902.05328
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2. Leading order CFT analysis of multi-scalar theories in d>2 / Codello, A. ; Safari, M. ; Vacca, G. P. ; Zanusso, O.
We investigate multi-field multicritical scalar theories using CFT constraints on two- and three-point functions combined with the Schwinger–Dyson equation. [...]
Published in EPJC 79 (2019) 331 10.1140/epjc/s10052-019-6817-1
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3. Scaling solutions in the derivative expansion / Defenu, N. ; Codello, A.
Scalar field theories with Z2 symmetry are the traditional playground of critical phenomena. [...]
Published in Physical Review D 98 (2018) 10.1103/PhysRevD.98.016013 arXiv:1711.01809
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4. A unified universe / Codello, Alessandro ; Jain, Rajeev Kumar
We present a unified evolution of the universe from very early times until the present epoch by including both the leading local correction R2 and the leading non-local term R1□2R to the classical gravitational action. [...]
Published in EPJC 78 (2018) 357 10.1140/epjc/s10052-018-5839-4
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5. Functional perturbative RG and CFT data in the ϵ -expansion / Codello, A. ; Safari, M. ; Vacca, G. P. ; Zanusso, O.
We show how the use of standard perturbative RG in dimensional regularization allows for a renormalization group-based computation of both the spectrum and a family of coefficients of the operator product expansion (OPE) for a given universality class. [...]
Published in EPJC 78 (2018) 30 10.1140/epjc/s10052-017-5505-2
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6. Leading CFT constraints on multi-critical models in d > 2 / Codello, Alessandro ; Safari, Mahmoud ; Vacca, Gian ; Zanusso, Omar
We consider the family of renormalizable scalar QFTs with self-interacting potentials of highest monomial ϕ m below their upper critical dimensions d c = 2 m m − 2 $$ {d}_c=\frac{2m}{m-2} $$ , and study them using a combination of CFT constraints, Schwinger-Dyson equation and the free theory behavior at the upper critical dimension. [...]
Published in JHEP 1704 (2017) 127 10.1007/JHEP04(2017)127 arXiv:1703.04830
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7. Conformal gauge-Yukawa theories away from four dimensions / Codello, Alessandro ; Langæble, Kasper ; Litim, Daniel ; Sannino, Francesco
We present the phase diagram and associated fixed points for a wide class of Gauge-Yukawa theories in d = 4 + ϵ dimensions. [...]
Published in JHEP 1607 (2016) 118 10.1007/JHEP07(2016)118 arXiv:1603.03462
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8. Computing the effective action with the functional renormalization group / Codello, Alessandro ; Percacci, Roberto ; Rachwał, Lesław ; Tonero, Alberto
The “exact” or “functional” renormalization group equation describes the renormalization group flow of the effective average action Γk . [...]
Published in EPJC 76 (2016) 226 10.1140/epjc/s10052-016-4063-3
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9. Marginally deformed Starobinsky gravity / Codello, Alessandro ; Joergensen, Jakob ; Sannino, Francesco ; Svendsen, Ole
We show that quantum-induced marginal deformations of the Starobinsky gravitational action of the form R 2(1− α ) , with R the Ricci scalar and α a positive parameter smaller than one half, can generate sizable primordial tensor modes. [...]
Published in JHEP 1502 (2015) 050 10.1007/JHEP02(2015)050 arXiv:1404.3558
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10. A functional RG equation for the c -function / Alessandro Codello ; Giulio D’Odorico ; Carlo Pagani
After showing how to prove the integrated c -theorem within the functional RG framework based on the effective average action, we derive an exact RG flow equation for Zamolodchikov’s c -function in two dimensions by relating it to the flow of the effective average action. [...]
Published in JHEP 1407 (2014) 040 10.1007/JHEP07(2014)040 arXiv:1312.7097
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6 Codello, Alessandro
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