Results 51 to 60 of about 6,179,788 (353)

Twistors and 2T-physics

open access: yes, 2005
Two-Time physics applies broadly to the formulation of physics and correctly describes the physical world as we know it. Recently it was applied to a 2T re-formulation of the d=4 twistor superstring, which was suggested by Witten as an efficient approach
Bars, Itzhak
core   +1 more source

Twistor Theory and the Harmonic Hull [PDF]

open access: yes, 2013
We use twistor theory to identify the harmonic hull of an arbitrary connected open subset U of R^{2m} for m at least 2. It is the natural domain of analytic continuation in C^{2m} for harmonic functions on U.
Eastwood, Michael, Xu, Feng
openaire   +3 more sources

Spacetime representation of topological phononics

open access: yesNew Journal of Physics, 2018
Non-conventional topology of elastic waves arises from breaking symmetry of phononic structures either intrinsically through internal resonances or extrinsically via application of external stimuli.
Pierre A Deymier   +3 more
doaj   +1 more source

The worldsheet dual of free super Yang-Mills in 4D

open access: yesJournal of High Energy Physics, 2021
The worldsheet string theory dual to free 4d N $$ \mathcal{N} $$ = 4 super Yang-Mills theory was recently proposed in [1]. It is described by a free field sigma model on the twistor space of AdS5 × S5, and is a direct generalisation of the corresponding ...
Matthias R. Gaberdiel, Rajesh Gopakumar
doaj   +1 more source

Asymptotic twistor theory and the Kerr theorem [PDF]

open access: yes, 2005
We first review asymptotic twistor theory with its real subspace of null asymptotic twistors: a five-dimensional CR manifold. This is followed by a description of the Kerr theorem (the identification of shear-free null congruences, in Minkowski space ...
E. Newman
semanticscholar   +1 more source

Conformal higher-spin symmetries in twistor string theory

open access: yesNuclear Physics B, 2014
It is shown that similarly to massless superparticle, classical global symmetry of the Berkovits twistor string action is infinite-dimensional. We identify its superalgebra, whose finite-dimensional subalgebra contains psl(4|4,R) superalgebra. In quantum
D.V. Uvarov
doaj   +1 more source

Comments on MHV Tree Amplitudes for Conformal Supergravitons from Topological B-Model

open access: yes, 2005
We use the twistor-string theory on the B-model of CP^{3|4} to compute the maximally helicity violating(MHV) tree amplitudes for conformal supergravitons.
C.-J. Zhu   +19 more
core   +1 more source

Adding flavour to twistor strings [PDF]

open access: yes, 2007
Twistor string theory is known to describe a wide variety of field theories at tree-level and has proved extremely useful in making substantial progress in perturbative gauge theory.
Badger S D   +16 more
core   +2 more sources

Association of Corticospinal Tract Asymmetry With Ambulatory Ability After Intracerebral Hemorrhage

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Ambulatory ability after intracerebral hemorrhage (ICH) is important to patients. We tested whether asymmetry between ipsi‐ and contra‐lesional corticospinal tracts (CSTs) assessed by diffusion tensor imaging (DTI) is associated with post‐ICH ambulation.
Yasmin N. Aziz   +25 more
wiley   +1 more source

Cubic Twistorial String Field Theory

open access: yes, 2004
Witten has recently proposed a string theory in twistor space whose D-instanton contributions are conjectured to compute N=4 super-Yang-Mills scattering amplitudes.
A. Neitzke   +15 more
core   +1 more source

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