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Correlation functio...
Correlation functions of the anharmonic oscillator : Numerical verification of two-loop corrections to the large-order behavior
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- Giorgini, Ludovico Theo (författare)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Nordita SU; Stockholm Univ, S-10691 Stockholm, Sweden.
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- Jentschura, Ulrich D. (författare)
- Missouri Univ Sci & Technol, Dept Phys, Rolla, MO 65409 USA.;MTA Particle Phys Res Grp, POB 51, H-4001 Debrecen, Hungary.
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- Malatesta, Enrico M. (författare)
- Bocconi Univ, Dept Comp Sci, Via Sarfatti 25, I-20136 Milan, Italy.;Bocconi Univ, Artificial Intelligence Lab, I-20136 Milan, Italy.;Bocconi Univ, Inst Data Sci & Analyt, I-20136 Milan, Italy.
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- Parisi, Giorgio (författare)
- Sapienza Univ Roma, Dipartimento Fis, Ple Aldo Moro 5, I-00185 Rome, Italy.;Ist Nazl Fis Nucl, Sez Roma, Ple Aldo Moro 5, I-00185 Rome, Italy.;Inst Nanotechnol NANOTEC CNR, Rome Unit, Ple Aldo Moro 5, I-00185 Rome, Italy.
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- Rizzo, Tommaso (författare)
- Inst Complex Syst ISC CNR, Rome Unit, Ple Aldo Moro 5, I-00185 Rome, Italy.;Sapienza Univ Roma, Dipartimento Fis, Ple Aldo Moro 5, I-00185 Rome, Italy.
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- Zinn-Justin, Jean (författare)
- Paris Saclay, IRFU CEA, F-91191 Gif Sur Yvette, France.
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(creator_code:org_t)
- American Physical Society (APS), 2022
- 2022
- Engelska.
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Ingår i: Physical Review D. - : American Physical Society (APS). - 2470-0010 .- 2470-0029. ; 105:10
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Recently, the large-order behavior of correlation functions of the O(N)-anharmonic oscillator has been analyzed by us [L. T. Giorgini et al., Phys. Rev. D 101, 125001 (2020)]. Two-loop corrections about the instanton configurations were obtained for the partition function, the two-point and four-point functions, and the derivative of the two-point function at zero momentum transfer. Here, we attempt to verify the obtained analytic results against numerical calculations of higher-order coefficients for the O(1), O(2), and O(3) oscillators, and we demonstrate the drastic improvement of the agreement of the large-order asymptotic estimates and perturbation theory upon the inclusion of the two-loop corrections to the large-order behavior.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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