Search Results - "Walters, Matthew T."
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Virasoro conformal blocks and thermality from classical background fields
Published in The journal of high energy physics (01-11-2015)“…A bstract We show that in 2d CFTs at large central charge, the coupling of the stress tensor to heavy operators can be re-absorbed by placing the CFT in a…”
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Universality of long-distance AdS physics from the CFT bootstrap
Published in The journal of high energy physics (01-08-2014)“…A bstract We begin by explicating a recent proof of the cluster decomposition principle in AdS ≥4 from the CFT ≥3 bootstrap. The CFT argument also computes the…”
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A conformal truncation framework for infinite-volume dynamics
Published in The journal of high energy physics (01-07-2016)“…A bstract We present a new framework for studying conformal field theories deformed by one or more relevant operators. The original CFT is described in…”
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Momentum space CFT correlators for Hamiltonian truncation
Published in The journal of high energy physics (01-10-2020)“…A bstract We consider Lorentzian CFT Wightman functions in momentum space. In particular, we derive a set of reference formulas for computing two- and…”
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5
Flux correlators and semiclassics
Published in The journal of high energy physics (12-03-2024)“…A bstract We consider correlators for the flux of energy and charge in the background of operators with large global U(1) charge in conformal field theory…”
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On the stress tensor light-ray operator algebra
Published in The journal of high energy physics (05-05-2021)“…A bstract We study correlation functions involving generalized ANEC operators of the form ∫ dx − x − n + 2 T − − x → in four dimensions. We compute two, three,…”
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7
Thermalization and chaos in a 1+1d QFT
Published in The journal of high energy physics (03-02-2023)“…A bstract We study aspects of chaos and thermodynamics at strong coupling in a scalar model using LCT numerical methods. We find that our eigenstate spectrum…”
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Nonperturbative matching between equal-time and lightcone quantization
Published in The journal of high energy physics (01-10-2020)“…A bstract We investigate the nonperturbative relation between lightcone (LC) and standard equal-time (ET) quantization in the context of λϕ 4 theory in d = 2…”
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Towards a nonperturbative construction of the S-matrix
Published in The journal of high energy physics (25-05-2023)“…A bstract We present a nonperturbative recipe for directly computing the S -matrix in strongly-coupled QFTs. The method makes use of spectral data obtained in…”
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Lightcone effective Hamiltonians and RG flows
Published in The journal of high energy physics (01-08-2018)“…A bstract We present a prescription for an effective lightcone (LC) Hamiltonian that includes the effects of zero modes, focusing on the case of Conformal…”
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Solving the 2D SUSY Gross-Neveu-Yukawa model with conformal truncation
Published in The journal of high energy physics (01-01-2021)“…A bstract We use Lightcone Conformal Truncation to analyze the RG flow of the two-dimensional supersymmetric Gross-Neveu-Yukawa theory, i.e. the theory of a…”
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New light species and the CMB
Published in The journal of high energy physics (01-12-2013)“…A bstract We consider the effects of new light species on the Cosmic Microwave Background. In the massless limit, these effects can be parameterized in terms…”
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13
Hawking from Catalan
Published in The journal of high energy physics (12-05-2016)“…A bstract The Virasoro algebra determines all ‘graviton’ matrix elements in AdS 3 /CFT 2 . We study the explicit exchange of any number of Virasoro gravitons…”
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14
Eikonalization of conformal blocks
Published in The journal of high energy physics (03-09-2015)“…A bstract Classical field configurations such as the Coulomb potential and Schwarzschild solution are built from the t-channel exchange of many light degrees…”
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15
Nonperturbative dynamics of (2+1)d ϕ4-theory from Hamiltonian truncation
Published in The journal of high energy physics (20-05-2021)“…A bstract We use Lightcone Conformal Truncation (LCT)—a version of Hamiltonian truncation — to study the nonperturbative, real-time dynamics of ϕ 4 -theory in…”
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16
Identifying boosted new physics with non-isolated leptons
Published in The journal of high energy physics (15-04-2015)“…A bstract We demonstrate the utility of leptons which fail standard isolation criteria in searches for new physics at the LHC. Such leptons can arise in any…”
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Thermalization and hydrodynamics of two-dimensional quantum field theories
Published in SciPost physics (01-04-2022)“…We consider 2d QFTs as relevant deformations of CFTs in the thermodynamic limit. Using causality and KPZ universality, we place a lower bound on the timescale…”
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18
RG flow from ϕ 4 theory to the 2D Ising model
Published in The journal of high energy physics (01-08-2017)“…We study 1+1 dimensional Φ 4 theory using the recently proposed method of conformal truncation. Starting in the UV CFT of free field theory, we construct a…”
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19
Nonperturbative dynamics of (2+1)d ϕ 4-theory from Hamiltonian truncation
Published in The journal of high energy physics (01-05-2021)“…Abstract We use Lightcone Conformal Truncation (LCT)—a version of Hamiltonian truncation — to study the nonperturbative, real-time dynamics of ϕ 4-theory in…”
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20
Semiconductor probes of light dark matter
Published in PHYSICS OF THE DARK UNIVERSE (01-11-2012)“…Dark matter with mass below about a GeV is essentially unobservable in conventional direct detection experiments. However, newly proposed technology will allow…”
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