منابع مشابه
Thermal Renormalons in Scalar Field Theory
In the frame of the scalar theory λφ4, we explore the occurrence of thermal renormalons, i. e. temperature dependent singularities in the Borel plane. Using Thermofield Dynamics, we found in fact a series of singularities of this kind, which are located to the right of the well known zero temperature pole, being therefore of a subleading character in the ambiguity of the Borel sum.
متن کامل1 v 1 1 8 N ov 1 99 9 UCCHEP - 06 / 99 November 1999 Thermal Renormalons in Scalar Field Theory
In the frame of the scalar theory λφ 4 , we explore the occurrence of thermal renormalons, i. e. temperature dependent singularities in the Borel plane. Using Thermofield Dynamics, we found in fact a series of singularities of this kind, which are located to the right of the well known zero temperature pole, being therefore of a subleading character in the ambiguity of the Borel sum.
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We investigate the high-order behavior of perturbative matching conditions in effective field theories. These series are typically badly divergent, and are not Borel summable due to infrared and ultraviolet renormalons which introduce ambiguities in defining the sum of the series. We argue that, when treated consistently, there is no physical significance to these ambiguities. Although nonpertu...
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This is a series of lectures on Monte Carlo results on the non-perturbative, lattice formulation approach to quantum field theory. Emphasis is put on 4D scalar quantum field theory. I discuss real space renormalization group, fixed point properties and logarithmic corrections, partition function zeroes, the triviality bound on the Higgs mass, finite size effects, Goldstone bosons and chiral per...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2000
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732300001481