Results 51 to 60 of about 458 (100)

Calculation of Feynman integrals by difference equations

open access: yes, 2003
In this paper we describe a method of calculation of master integrals based on the solution of systems of difference equations in one variable. Various explicit examples are given, as well as the generalization to arbitrary diagrams.Comment: LaTex, 10 ...
Laporta, S.
core   +2 more sources

A note on the Penrose junction conditions

open access: yes, 1999
Impulsive pp-waves are commonly described either by a distributional spacetime metric or, alternatively, by a continuous one. The transformation $T$ relating these forms clearly has to be discontinuous, which causes two basic problems: First, it changes ...
Kunzinger, Michael, Steinbauer, Roland
core   +1 more source

A survey on infertility in men and its relation to risk factors in selected provinces of Iran. [PDF]

open access: yesJBRA Assist Reprod, 2021
Aliakbari F   +5 more
europepmc   +1 more source

Performance and pacing of professional IRONMAN triathletes: the fastest IRONMAN World Championship ever-IRONMAN Hawaii 2022. [PDF]

open access: yesSci Rep, 2023
Knechtle B   +7 more
europepmc   +1 more source

Anticancer assessment and antibiofilm potential of Laetiporus sulphureus mushroom originated from Serbia. [PDF]

open access: yesFood Sci Nutr, 2023
Jovanović MM   +6 more
europepmc   +1 more source

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