Results 41 to 50 of about 198,703 (275)

Dissipation-Induced Heteroclinic Orbits in Tippe Tops [PDF]

, 2008
This paper demonstrates that the conditions for the existence of a dissipation-induced heteroclinic orbit between the inverted and noninverted states of a tippe top are determined by a complex version of the equations for a simple harmonic oscillator ...
Bou-Rabee, Nawaf M., Marsden, Jerrold E., Romero, Louis A.   +2 more
core   +3 more sources

Duality and helicity: A symplectic viewpoint

Physics Letters B, 2016
The theorem which says that helicity is the conserved quantity associated with the duality symmetry of the vacuum Maxwell equations is proved by viewing electromagnetism as an infinite dimensional symplectic system.
M. Elbistan, C. Duval, P.A. Horváthy, P.-M. Zhang   +3 more
doaj   +1 more source

Approximate Closed-Form Solutions for the Maxwell-Bloch Equations via the Optimal Homotopy Asymptotic Method

Mathematics, 2022
This paper emphasizes some geometrical properties of the Maxwell–Bloch equations. Based on these properties, the closed-form solutions of their equations are established.
Remus-Daniel Ene, Nicolina Pop, Marioara Lapadat, Luisa Dungan   +3 more
doaj   +1 more source

Anti-self-dual Maxwell solutions on hyperk\"ahler manifold and N=2 supersymmetric Ashtekar gravity

, 1998
Anti-self-dual (ASD) Maxwell solutions on 4-dimensional hyperk\"ahler manifolds are constructed. The N=2 supersymmetric half-flat equations are derived in the context of the Ashtekar formulation of N=2 supergravity.
Ashtekar A, Boyer C, Capovilla R, Donaldson S K, Eguchi T, Ezawa K, Gates S J Jr, Joyce D D, Kunitomo H, Mason L J, Mason L J, Ooguri H, Ooguri H, Penrose R, Robinson D C, Sayuri Miyagi, Shoji Zeze, Takasaki K, Takayoshi Ootsuka, Ward R S, Yukinori Yasui   +20 more
core   +1 more source

Perturbation Method for Particle-like Solutions of the Einstein-Dirac-Maxwell Equations [PDF]

, 2009
The aim of this Note is to prove by a perturbation method the existence of solutions of the coupled Einstein-Dirac-Maxwell equations for a static, spherically symmetric system of two fermions in a singlet spinor state and with the electromagnetic ...
Finster, Finster, Lieb, Lions, Ounaies, Rota Nodari, Simona Rota Nodari   +6 more
core   +5 more sources

Lifting of the Vlasov-Maxwell Bracket by Lie-transform Method

, 2016
The Vlasov-Maxwell equations possess a Hamiltonian structure expressed in terms of a Hamiltonian functional and a functional bracket. In the present paper, the transformation ("lift") of the Vlasov-Maxwell bracket induced by the dynamical reduction of ...
Brizard, A. J., Burby, J. W., de Guillebon, L., Morrison, P. J., Vittot, M.   +4 more
core   +3 more sources

Charged black holes: Wave equations for gravitational and electromagnetic perturbations [PDF]

, 2002
A pair of wave equations for the electromagnetic and gravitational perturbations of the charged Kerr black hole are derived. The perturbed Einstein-Maxwell equations in a new gauge are employed in the derivation. The wave equations refer to the perturbed
Bagaroff F. K., Bini D., Chitre D. M., Chrzanowski P. L., Chrzanowski P. L., Crossman R. G., Detweiler S., Hughes S. A., Kinnersley W., Mano S., Mano S., Matyas Vasuth, Newman E. T., Preparata G., Punsly B., Stewart J. M., Vazquez S., Zerilli F., Zoltan Perjes   +18 more
core   +3 more sources

Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma

Molecular Oncology, EarlyView.
The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic, Anne Nørremølle, Lilian Bomme Ousager, Lars van Brakel Andersen, Marie Louise Mølgaard Binderup, Mads Thomassen   +5 more
wiley   +1 more source

Frame Indifferent Formulation of Maxwell's Elastic Fluid and the Rational Continuum Mechanics of the Electromagnetic Field

, 2011
We show that the linearized equations of the incompressible elastic medium admit a `Maxwell form' in which the shear component of the stress vector plays the role of the electric field, and the vorticity plays the role of the magnetic field.
Bird, Borisenko, C.I. Christov, Chadwick, Christodoulides, Christov, Christov, Christov, Christov, Christov, Dmitriev, Ernst, Graneau, Griffiths, Harmuth, Hertz, Jolly, Joos, Joseph, Larmor, Oldroyd, Sambursky, Schrödinger, Sedov, Segel, Whittaker   +25 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source