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Giving Hamiltonian Truncation a Boost

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arxiv 2207.01659 v1 pith:AUVX25UZ submitted 2022-07-04 hep-th cond-mat.str-el

Hongbin Chen , A. Liam Fitzpatrick , Emanuel Katz , Yuan Xin This is my paper · ORCID
classification hep-thcond-mat.str-el
keywords hamiltoniantruncationvolumeallowsbecomeboostboostedconsider
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We study Hamiltonian truncation in boosted frames. We consider the thermal and magnetic field deformations of the 2d Ising model using TCSA at finite momentum. We find that even with moderate momenta, the spectrum and time-dependent correlation functions become significantly less dependent on the volume of the system. This allows for a more reliable determination of infinite volume observables.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Higher-order structure of Hamiltonian truncation effective theory

    hep-ph 2026-02 conditional novelty 6.0 of 10

    All-order local and O(Emax⁻⁴) non-local corrections are derived for Hamiltonian truncation effective theory of 2D λφ⁴; numerically, NNLO barely improves on NLO.

  2. Systematic Improvement of Hamiltonian Truncation Effective Theory

    hep-th 2025-07 conditional novelty 6.0 of 10

    NLO matching corrections with nonlocal terms are computed for 1+1D λφ⁴ Hamiltonian truncation, and the eigenvalue error is shown to scale as 1/Emax⁴, confirming the effective theory power counting.

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