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Lightcone Effective Hamiltonians and RG Flows / Fitzpatrick, A. Liam (Boston U.) ; Kaplan, Jared (Johns Hopkins U. ; Stanford U., ITP) ; Katz, Emanuel (Boston U.) ; Vitale, Lorenzo G. (Boston U.) ; Walters, Matthew T. (Boston U. ; CERN)
We present a prescription for an effective lightcone (LC) Hamiltonian that includes the effects of zero modes, focusing on the case of Conformal Field Theories (CFTs) deformed by relevant operators. We show how the prescription resolves a number of issues with LC quantization, including i) the apparent non-renormalization of the vacuum, ii) discrepancies in critical values of bare parameters in equal-time vs LC quantization, and iii) an inconsistency at large N in CFTs with simple AdS duals. [...]
arXiv:1803.10793; CERN-TH-2018-030.- 2018-08-21 - 65 p. - Published in : JHEP 08 (2018) 120 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: arXiv:1803.10793 - PDF; 1803.10793 - PDF;

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NLO Renormalization in the Hamiltonian Truncation / Elias-Miro, Joan (INFN, Trieste ; SISSA, Trieste) ; Rychkov, Slava (CERN ; Ecole Normale Superieure ; UPMC, Paris (main)) ; Vitale, Lorenzo G. (Boston U. ; ITPP, Lausanne)
Hamiltonian Truncation (a.k.a. Truncated Spectrum Approach) is a numerical technique for solving strongly coupled QFTs, in which the full Hilbert space is truncated to a finite-dimensional low-energy subspace. [...]
arXiv:1706.09929; CERN-TH-2017-124.- 2017-09-27 - 43 p. - Published in : Phys. Rev. D 96 (2017) 065024 Fulltext: arXiv:1706.09929 - PDF; 10.1103_PhysRevD.96.065024 - PDF;

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High-Precision Calculations in Strongly Coupled Quantum Field Theory with Next-to-Leading-Order Renormalized Hamiltonian Truncation / Elias-Miro, Joan (INFN, Trieste ; SISSA, Trieste) ; Rychkov, Slava (Ecole Normale Superieure ; CERN) ; Vitale, Lorenzo G. (ITPP, Lausanne ; Boston U.)
Hamiltonian Truncation (a.k.a. Truncated Spectrum Approach) is an efficient numerical technique to solve strongly coupled QFTs in d=2 spacetime dimensions. [...]
arXiv:1706.06121; CERN-TH-2017-132.- 2017-10-31 - 14 p. - Published in : JHEP 10 (2017) 213 Article from SCOAP3: PDF; Fulltext: PDF;

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Hamiltonian Truncation Study of the Phi^4 Theory in Two Dimensions II. The Z_2-Broken Phase and the Chang Duality / Rychkov, Slava (CERN ; Ecole Normale Superieure ; UPMC, Paris (main)) ; Vitale, Lorenzo G. (ITPP, Lausanne)
The Fock-space Hamiltonian truncation method is developed further, paying particular attention to the treatment of the scalar field zero mode. This is applied to the two-dimensional Phi^4 theory in the phase where the Z_2-symmetry is spontaneously broken, complementing our earlier study of the Z_2-invariant phase and of the critical point. [...]
arXiv:1512.00493; CERN-PH-TH-2015-277; CERN-PH-TH-2015-277.- Geneva : CERN, 2016-03-07 - 28 p. - Published in : Phys. Rev. D 93 (2016) 065014 APS Open Access article: PDF; Fulltext: 10.1103_PhysRevD.93.065014 - PDF; arXiv:1512.00493 - PDF; 1512.00493 - PDF; External link: Preprint

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Hamiltonian Truncation Study of the Phi^4 Theory in Two Dimensions / Rychkov, Slava (CERN ; Ecole Normale Superieure ; UPMC, Paris (main)) ; Vitale, Lorenzo G. (ITPP, Lausanne)
We defend the Fock-space Hamiltonian truncation method, which allows to calculate numerically the spectrum of strongly coupled quantum field theories, by putting them in a finite volume and imposing a UV cutoff. The accuracy of the method is improved via an analytic renormalization procedure inspired by the usual effective field theory. [...]
arXiv:1412.3460; CERN-PH-TH-2014-254; CERN-PH-TH-2014-254.- 2015-04-08 - 26 p. - Published in : Phys. Rev. D 91 (2015) 085011 APS Open Access article: PDF; Fulltext: arXiv:1412.3460 - PDF; 1412.3460 - PDF; External link: Preprint

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Se också: liknande författarnamn
646	Vitale, L
140	Vitale, L.
12	Vitale, Lorenzo
1	Vitale, Lorenzo G

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