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CERN Document Server 4 записей найдено  Поиск длился 1.30 секунд. 
1.
Position-Space Renormalisation of the Energy-Momentum Tensor / Rocha, Henrique Bergallo (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Jüttner, Andreas (Southampton U. ; U. Southampton (main) ; CERN) ; Kitching-Morley, Ben (Southampton U. ; U. Southampton (main)) ; Lee, Joseph K.L. (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Portelli, Antonin (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Skenderis, Kostas (U. Southampton (main))
There is increasing interest in the study of nonperturbative aspects of three-dimensional quantum field theories (QFT). They appear as holographic dual to theories of (strongly coupled) gravity. [...]
arXiv:2212.09469.- 2023-01-29 - 11 p. - Published in : PoS LATTICE2022 (2023) 205 Fulltext: document - PDF; 2212.09469 - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.205
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2.
Critical behaviour and phase structure of 3d Scalar+Gauge Field Theories in the adjoint representation / Rocha, Henrique Bergallo (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Dobson, Elizabeth (U. Edinburgh, Higgs Ctr. Theor. Phys. ; Graz U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Kitching-Morley, Ben (Southampton U.) ; Lee, Joseph K L (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Portelli, Antonin (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Skenderis, Kostas (Southampton U.)
In a class of holographic models for cosmology, the dual theory is given by a massless super-renormalisable QFT in 3 dimensions. In order to obtain cosmological observables, correlators of this QFT may be obtained via lattice field theory. [...]
2022 - 9 p. - Published in : PoS LATTICE2021 (2022) 270 Fulltext: PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.270
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3.
Renormalization of the $3D$$SU(N)$ scalar energy-momentum tensor using the Wilson flow / Lee, Joseph K.L. (Edinburgh U., Inst. Astron.) ; Dobson, Elizabeth (Edinburgh U., Inst. Astron. ; Graz U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Kitching-Morley, Ben (Southampton U. ; U. Southampton (main)) ; Nourry, Valentin (Edinburgh U., Inst. Astron. ; APC, Paris) ; Portelli, Antonin (Edinburgh U., Inst. Astron.) ; Rocha, Henrique Bergallo (Edinburgh U., Inst. Astron.) ; Skenderis, Kostas (Southampton U. ; U. Southampton (main)) ; Del Debbio, Luigi (Edinburgh U., Inst. Astron.)
In the holographic approach to cosmology, cosmological observables are described in terms of correlators of a three-dimensional boundary quantum field theory. As a concrete model, we study the $3D$ massless $SU(N)$ scalar matrix field theory with a $\phi^4$ interaction. [...]
arXiv:2202.03970.- 2022-05-16 - 10 p. - Published in : PoS LATTICE2021 (2022) 313 Fulltext: 2202.03970 - PDF; document - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.313
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4.
A numerical and theoretical study of multilevel performance for two-point correlator calculations / Kitching-Morley, Ben (U. Southampton (main)) ; Jüttner, Andreas (U. Southampton (main) ; CERN)
An investigation of the performance of the multilevel algorithm in the approach to criticality has been undertaken using the Ising model, performing simulations across a range of temperatures. Numerical results show that the performance of multilevel in this system deteriorates as the correlation length is increased with respect to the lattice size. [...]
arXiv:2201.01610.- 2022-05-16 - 9 p. - Published in : PoS LATTICE2021 (2022) 133 Fulltext: 2201.01610 - PDF; document - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.133
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