The twistor Wilson loop and the amplituhedron

Autor: Paul Heslop, Alastair Stewart

Publikováno v: Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-19 (2018)

Abstract The amplituhedron provides a beautiful description of perturbative superamplitude integrands in N = 4 $$ \mathcal{N}=4 $$ SYM in terms of purely geometric objects, generalisations of polytopes. On the other hand the Wilson loop in supertwist

Externí odkaz: https://doaj.org/article/db56dddd243d4ee7bcb420499be7d06b

Internal boundaries of the loop amplituhedron

Autor: Gabriele Dian, Paul Heslop, Alastair Stewart

Publikováno v: SciPost Physics, Vol 15, Iss 3, p 098 (2023)

The strict definition of positive geometry implies that all maximal residues of its canonical form are $± 1$. We observe, however, that the loop integrand of the amplitude in planar ${\cal N}=4$ super Yang-Mills has maximal residues not equal to $±

Externí odkaz: https://doaj.org/article/52c6d0842eee4d578d9e785fff265ca4

Comprehensive multiplexed superfusion system enables physiological emulation in cell culture: exemplification by persistent circadian entrainment

Autor: Yanqi Wu, Alastair Stewart, Xumei Gao, Tianhong Cheng

Publikováno v: Lab on a chip. 22(6)

A multiplexed superfusion system enables dynamic in vitro physiological emulation, as demonstrated by persistent circadian entrainment.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56f12adc1900e888e44856191b1b012b
https://pubmed.ncbi.nlm.nih.gov/35199811

Structural Basis for Rapid Voltage Dependent Inactivation of HERG Potassium Channels

Autor: Jamie Vandenberg, Carus Lau, Emelie Flood, Mark Hunter, Chai-Ann Ng, James Bouwer, Alastair Stewart, Eduardo Perozo, Toby Allen

The exquisite fine tuning of biological electrical signalling is mediated by variations in the rates of opening and closing of different ion channels(1). In addition to open and closed conformations, ion channels can exist in an inactivated state, wh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0476a01ff26a4b7baba27192a6019483
https://doi.org/10.21203/rs.3.rs-1105661/v1

The twistor Wilson loop and the amplituhedron

Autor: Alastair Stewart, Paul Heslop

Publikováno v: Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-19 (2018)
Journal of high energy physics, 2018, Vol.2018(10), pp.142 [Peer Reviewed Journal]
Journal of High Energy Physics

The amplituhedron provides a beautiful description of perturbative superamplitude integrands in N=4 SYM in terms of purely geometric objects, generalisations of polytopes. On the other hand the Wilson loop in supertwistor space also gives an explicit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3b733a16585adbcbbc747cef3677fa2
http://link.springer.com/article/10.1007/JHEP10(2018)142