Bubble-resummation and critical-point methods for $$\beta $$ β -functions at large N

Autor: Tommi Alanne, Simone Blasi, Nicola Andrea Dondi

Publikováno v: European Physical Journal C: Particles and Fields, Vol 79, Iss 8, Pp 1-11 (2019)

Abstract We investigate the connection between the bubble-resummation and critical-point methods for computing the $$\beta $$ β -functions in the limit of large number of flavours, N, and show that these can provide complementary information. While

Externí odkaz: https://doaj.org/article/743b1acf90724b959f8565e2617ade53

Safe SUSY

Autor: Borut Bajc, Nicola Andrea Dondi, Francesco Sannino

Publikováno v: Journal of High Energy Physics, Vol 2018, Iss 3, Pp 1-15 (2018)

Abstract We investigate the short distance fate of distinct classes of not asymptotically free supersymmetric gauge theories. Examples include super QCD with two adjoint fields and generalised superpotentials, gauge theories without superpotentials a

Externí odkaz: https://doaj.org/article/73dcec025a884b5cb162a0b798c04a6d

Towards the QED beta function and renormalons at 1/Nf2 and 1/Nf3

Autor: Manuel Reichert, Gerald V. Dunne, Nicola Andrea Dondi, Francesco Sannino

Publikováno v: Physical Review D. 102

We determine the 1=N2 f and 1=N3 f contributions to the QED beta function stemming from the closed set of nested diagrams. At the order of 1=N2 f, we discover a new logarithmic branch cut closer to the origin when compared to the 1=Nf results. The sa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::484df536de3162f31d398c0d13d67577
https://doi.org/10.1103/physrevd.102.035005

UV completion on the worldline

Autor: Nicola Andrea Dondi, Steven Abel

Publikováno v: Journal of High Energy Physics
Abel, S & Dondi, N A 2019, ' UV completion on the worldline ', Journal of High Energy Physics, vol. 2019, no. 7, 90 . https://doi.org/10.1007/JHEP07(2019)090
Journal of high energy physics, 2019, Vol.2019(7), pp.090 [Peer Reviewed Journal]
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-21 (2019)

A framework for UV completing particle theories is proposed, based on the worldline formalism, which is equivalent to weighting all sums over histories with a proper-time dependent measure that has a smallest proper-time. We deduce a criterion to avo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75040a307aa61e268af4d3abce154883
http://repo.scoap3.org/api

Bubble-resummation and critical-point methods for $\beta$-functions at large $N$

Autor: Nicola Andrea Dondi, Simone Blasi, Tommi Alanne

Publikováno v: The European Physical Journal C: Particles and Fields
Alanne, T, Blasi, S & Dondi, N A 2019, ' Bubble-resummation and critical-point methods for β-functions at large N ', European Physical Journal C, vol. 79, no. 8, 689 . https://doi.org/10.1140/epjc/s10052-019-7190-9
European Physical Journal C: Particles and Fields, Vol 79, Iss 8, Pp 1-11 (2019)
European Physical Journal

We investigate the connection between the bubble-resummation and critical-point methods for computing the $\beta$-functions in the limit of large number of flavours, $N$, and show that these can provide complementary information. While the methods ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffeef00580d54ade39f1ecd1dca24f00
http://arxiv.org/abs/1904.05751