Results 61 to 70 of about 10,573 (294)

Holography principle for twistor spaces [PDF]

open access: yesPure and Applied Mathematics Quarterly, 2014
26 pages, with appendix by Dmitry ...
openaire   +3 more sources

Two-Twistor Space, Commuting Composite Minkowski Coordinates and Particle Dynamics

open access: yes, 2005
We employ the modification of the basic Penrose formula in twistor theory, which allows to introduce commuting composite space-time coordinates. It appears that in the course of such modification the internal symmetry SU(2) of two-twistor system is ...
A. Bette   +4 more
core   +2 more sources

New classes of bi-axially symmetric solutions to four-dimensional Vasiliev higher spin gravity [PDF]

open access: yes, 2017
Indexación: Web of Science; Scopus; Scielo.We present new infinite-dimensional spaces of bi-axially symmetric asymptotically anti-de Sitter solutions to four-dimensional Vasiliev higher spin gravity, obtained by modifications of the Ansatz used in arXiv:
Sundell, P, Yin, YH
core   +2 more sources

Mechanically Adaptable High‐Performance p(SBMA‐MMA) Copolymer Hydrogel with Iron (II/III) Perchlorate for Wearable Thermocell Applications

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
A high‐performance n‐type element for quasi‐solid‐state thermocells has been introduced, outperforming conventional p‐type elements and showcasing the potential to harness body heat as an energy source or power embedded sensors. This advance significantly contributes to waste thermal energy harvesting and wearable technology, paving the way for self ...
Gilyong Shin   +10 more
wiley   +1 more source

Notes on scattering amplitudes as differential forms

open access: yesJournal of High Energy Physics, 2018
Inspired by the idea of viewing amplitudes in N = 4 $$ \mathcal{N}=4 $$ SYM as differential forms on momentum twistor space, we introduce differential forms on the space of spinor variables, which combine helicity amplitudes in any four-dimensional gauge
Song He, Chi Zhang
doaj   +1 more source

A Deformation of Twistor Space and a Chiral Mass Term in N=4 Super Yang-Mills Theory [PDF]

open access: yes, 2005
Super twistor space admits a certain (super) complex structure deformation that preserves the Poincare subgroup of the symmetry group PSL(4|4) and depends on 10 parameters.
A.D. Popov   +33 more
core   +1 more source

The Emerging 4D Printing of Shape‐Memory Thermomorphs for Self‐Adaptative Biomedical Implants

open access: yesAdvanced Functional Materials, EarlyView.
4D printing enables the creation of smart implants that adapt to changing conditions in the human body over time. At the core of this technology are shape‐memory thermomorphs (SMTMs). This review offers an in‐depth analysis of 4D printing with SMTMs, emphasizing the latest advancements in smart materials, stimuli, programming principles, and their ...
Aixiang Ding, Fang Tang, Eben Alsberg
wiley   +1 more source

A new twist on spinning (A)dS correlators

open access: yesJournal of High Energy Physics
Massless spinning correlators in cosmology are extremely complicated. In contrast, the scattering amplitudes of massless particles with spin are very simple.
Daniel Baumann   +3 more
doaj   +1 more source

The holographic dual of the Penrose transform

open access: yesJournal of High Energy Physics, 2018
We consider the holographic duality between type-A higher-spin gravity in AdS4 and the free U(N) vector model. In the bulk, linearized solutions can be translated into twistor functions via the Penrose transform.
Yasha Neiman
doaj   +1 more source

Cutting the traintracks: Cauchy, Schubert and Calabi-Yau

open access: yesJournal of High Energy Physics, 2023
In this note we revisit the maximal-codimension residues, or leading singularities, of four-dimensional L-loop traintrack integrals with massive legs, both in Feynman parameter space and in momentum (twistor) space.
Qu Cao, Song He, Yichao Tang
doaj   +1 more source

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