Results 11 to 20 of about 5,632,423 (343)
Flowing in Group Field Theory Space: a Review [PDF]
, 2016 We provide a non-technical overview of recent extensions of renormalization methods and techniques to Group Field Theories (GFTs), a class of combinatorially non-local quantum field theories which generalize matrix models to dimension $d \geq 3$.
Carrozza, Sylvain
core +4 more sources
Mean-Field Phase Transitions in Tensorial Group Field Theory Quantum Gravity. [PDF]
Physical Review Letters, 2022 Controlling the continuum limit and extracting effective gravitational physics are shared challenges for quantum gravity approaches based on quantum discrete structures.
L. Marchetti +3 more
semanticscholar +1 more source
Towards anisotropic cosmology in group field theory [PDF]
Classical and quantum gravity, 2022 In cosmological group field theory (GFT) models for quantum gravity coupled to a massless scalar field the total volume, seen as a function of the scalar field, follows the classical Friedmann dynamics of a flat Friedmann–Lemaître–Robertson–Walker ...
Andrea Calcinari, Steffen Gielen
semanticscholar +1 more source
Emergent cosmology from quantum gravity in the Lorentzian Barrett-Crane tensorial group field theory model [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 We study the cosmological sector of the Lorentzian Barrett-Crane (BC) model coupled to a free massless scalar field in its Group Field Theory (GFT) formulation, corresponding to the mean-field hydrodynamics obtained from coherent condensate states.
Alexander F. Jercher +2 more
semanticscholar +1 more source
Frozen formalism and canonical quantization in group field theory [PDF]
Physical Review D, 2021 Canonical quantization of gravitational systems is obstructed by the problem of time. Due to diffeomorphism symmetry the Hamiltonian vanishes: dynamics with respect to a background time parameter appears “frozen.” Two strategies towards the quantization ...
Steffen Gielen
semanticscholar +1 more source
Hamiltonian group field theory with multiple scalar matter fields [PDF]
Physical Review D, 2020 One approach to defining dynamics for quantum gravity in a naturally timeless setting is to select a suitable matter degree of freedom as a 'clock' before quantisation.
Steffen Gielen, A. Polaczek
semanticscholar +1 more source
Cosmological implications of the hydrodynamical phase of group field theory [PDF]
General Relativity and Gravitation, 2020 In this review we focus on the main cosmological implications of the Group Field Theory approach, according to which an effective continuum macroscopic dynamics can be extracted from the underlying formalism for quantum gravity.
L. Gabbanelli, Silvia De Bianchi
semanticscholar +1 more source
Precision boson-jet azimuthal decorrelation at hadron colliders
Journal of High Energy Physics, 2023 The azimuthal angular decorrelation of a vector boson and jet is sensitive to QCD radiation, and can be used to probe the quark-gluon plasma in heavy-ion collisions.
Yang-Ting Chien +4 more
doaj +1 more source
Journal of High Energy Physics, 2022 Supersymmetric Sp(k) quantum chromodynamics with 8 supercharges in space-time dimensions 3 to 6 can be realised by two different Type II brane configurations in the presence of orientifolds.
Satoshi Nawata +3 more
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Confinement in the tricritical Ising model
Physics Letters B, 2022 We study the leading and sub-leading magnetic perturbations of the thermal E7 integrable deformation of the tricritical Ising model. In the low-temperature phase, these magnetic perturbations lead to the confinement of the kinks of the model.
M. Lencsés, G. Mussardo, G. Takács
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