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Two-Loop Corrections to Large Order Behavior of $\varphi^4$ Theory
Statistical Mechanics · Submitted 14 Apr 2017
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We have computed the series of the free energy up to two-loop order in two and three dimension.
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The abstract, sentence by sentence
We consider the large order behavior of the perturbative expansion of the scalar $\varphi^4$ field theory in terms of a perturbative expansion around an instanton solution. We have computed the series of the free energy up to two-loop order in two and three dimension. Topologically there is only an additional Feynman diagram with respect to the previously known one dimensional case, but a careful treatment of renormalization is needed. The propagator and Feynman diagrams were expressed in a form suitable for numerical evaluation. We then obtained explicit expressions summing over $O(10^3)$ distinct eigenvalues determined numerically with the corresponding eigenfunctions.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We consider the large order behavior of the perturbative expansion of the scalar $\varphi^4$ field theory in terms of a perturbative expansion around an instanton solution. | contribution 0.52 | 0.56 | 0.07 | asserted 0.79 |
| s1 | We have computed the series of the free energy up to two-loop order in two and three dimension. | contribution 0.68 | 0.96 | 0.19 | asserted 1.00 |
| s2 | Topologically there is only an additional Feynman diagram with respect to the previously known one dimensional case, but a careful treatment of renormalization is needed. | contribution 0.22 | 0.46 | 0.09 | asserted 1.00 |
| s3 | The propagator and Feynman diagrams were expressed in a form suitable for numerical evaluation. | method 0.99 | 0.91 | 0.04 | asserted 1.00 |
| s4 | We then obtained explicit expressions summing over $O(10^3)$ distinct eigenvalues determined numerically with the corresponding eigenfunctions. | method 0.62 | 0.96 | 0.15 | asserted 1.00 |
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Original abstract
We consider the large order behavior of the perturbative expansion of the scalar $\varphi^4$ field theory in terms of a perturbative expansion around an instanton solution. We have computed the series of the free energy up to two-loop order in two and three dimension. Topologically there is only an additional Feynman diagram with respect to the previously known one dimensional case, but a careful treatment of renormalization is needed. The propagator and Feynman diagrams were expressed in a form suitable for numerical evaluation. We then obtained explicit expressions summing over $O(10^3)$ distinct eigenvalues determined numerically with the corresponding eigenfunctions.
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