Results 11 to 20 of about 41,884 (217)

T-Duality via Gerby Geometry and Reductions [PDF]

, 2015
We consider topological T-duality of torus bundles equipped with S^{1}-gerbes. We show how a geometry on the gerbe determines a reduction of its band to the subsheaf of S^{1}-valued functions which are constant along the torus fibres.
Bunke, Ulrich, Nikolaus, Thomas
core   +1 more source

Dispersionless integrable systems in 3D and Einstein-Weyl geometry [PDF]

, 2013
For several classes of second order dispersionless PDEs, we show that the symbols of their formal linearizations define conformal structures which must be Einstein-Weyl in 3D (or self-dual in 4D) if and only if the PDE is integrable by the method of ...
Ferapontov, Eugene, Kruglikov, Boris
core   +2 more sources

Selective Categories and Linear Canonical Relations [PDF]

, 2014
A construction of Wehrheim and Woodward circumvents the problem that compositions of smooth canonical relations are not always smooth, building a category suitable for functorial quantization.
Li-Bland, David, Weinstein, Alan
core   +2 more sources

Real Hamiltonian Forms of Affine Toda Models Related to Exceptional Lie Algebras [PDF]

, 2006
The construction of a family of real Hamiltonian forms (RHF) for the special class of affine 1+1-dimensional Toda field theories (ATFT) is reported. Thus the method, proposed in [1] for systems with finite number of degrees of freedom is generalized to ...
Gerdjikov, Vladimir S., Grahovski, Georgi G.   +1 more
core   +4 more sources

Flux moduli stabilisation, Supergravity algebras and no-go theorems [PDF]

, 2010
We perform a complete classification of the flux-induced 12d algebras compatible with the set of N=1 type II orientifold models that are T-duality invariant, and allowed by the symmetries of the T^6/(Z_2 x Z_2) isotropic orbifold.
A Dabholkar, A Font, A Guarino, A Micu, Adolfo Guarino, B Wecht, Beatriz de Carlos, C Albertsson, C Caviezel, C Caviezel, CM Hull, CM Hull, CM Hull, CM Hull, D Roest, E Palti, E Silverstein, G Aldazabal, G Aldazabal, G Aldazabal, G Dall’Agata, G Dall’Agata, G Dall’Agata, G Villadoro, H Samtleben, J Scherk, J Scherk, J Schon, J Shelton, J Shelton, J-P Derendinger, Jesús M. Moreno, JP Derendinger, L Castellani, M Graña, M Graña, M Montigny de, MP Hertzberg, N Kaloper, P Manousselis, PG Camara, R Flauger, RA Reid-Edwards, S Kachru, SS Haque, UH Danielsson   +45 more
core   +2 more sources

The Gambier Mapping, Revisited

, 1998
We examine critically the Gambier equation and show that it is the generic linearisable equation containing, as reductions, all the second-order equations which are integrable through linearisation.
Grammaticos, B., Lafortune, S., Ramani, A.   +2 more
core   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

Three-qubit pure-state canonical forms [PDF]

, 2000
In this paper we analyse the canonical forms into which any pure three-qubit state can be cast. The minimal forms, i.e. the ones with the minimal number of product states built from local bases, are also presented and lead to a complete classification of
A. Acín, A. Andrianov, A. Andrianov, E. Jané, R. Tarrach   +4 more
semanticscholar   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source