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pro vyhledávání: '"Ekstrand, Joel"'
Autor:
Ekstrand, Joel
Innowearable AB has developed a product called Inno-XTM that calculates musclefatigue during three exercises: squat jumps, wall sit, and leg extension. Inno-X uses an accelerometer and a surface electromyography sensor. The goal of thisproject was to
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-51311
Autor:
Ekstrand, Joel
In this thesis, we investigate sigma models and algebraic structures emerging from a Hamiltonian description of their dynamics, both in a classical and in a quantum setup. More specifically, we derive the phase space structures together with the Hami
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-159918
Autor:
Ekstrand, Joel, Nordling, Sofia
Dagens reklambransch är starkt konkurrensutsatt och antalet aktörer ökar varje år. Globalisering, teknisk utveckling och kundens ökade kunskap om marknadsföring är endast några faktorer som bidrar till den ökade svårigheten för reklambyrå
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-879
Publikováno v:
Journal of Geometry and Physics, Volume 62, Issue 11, November 2012, Pages 2259-2278
We construct a sheaf of N=2 vertex algebras naturally associated to any Poisson manifold. The relation of this sheaf to the chiral de Rham complex is discussed. We reprove the result about the existence of two commuting N = 2 superconformal structure
Externí odkaz:
http://arxiv.org/abs/1108.4943
Autor:
Ekstrand, Joel
Publikováno v:
Comput.Phys.Commun.182:409-418,2011
We give an introduction to the Mathematica package Lambda, designed for calculating $\lambda$-brackets in both vertex algebras, and in SUSY vertex algebras. This is equivalent to calculating operator product expansions in two-dimensional conformal fi
Externí odkaz:
http://arxiv.org/abs/1004.5264
Publikováno v:
Comm.Math.Phys. 318 (2013) 575-613
Interpreting the chiral de Rham complex (CDR) as a formal Hamiltonian quantization of the supersymmetric non-linear sigma model, we suggest a setup for the study of CDR on manifolds with special holonomy. We show how to systematically construct globa
Externí odkaz:
http://arxiv.org/abs/1003.4388
Publikováno v:
Adv.Theor.Math.Phys.13:1221-1254,2009
We propose a physical interpretation of the chiral de Rham complex as a formal Hamiltonian quantization of the supersymmetric non-linear sigma model. We show that the chiral de Rham complex on a Calabi-Yau manifold carries all information about the c
Externí odkaz:
http://arxiv.org/abs/0905.4447
Autor:
Ekstrand, Joel, Zabzine, Maxim
Publikováno v:
JHEP 1103:074,2011
We study the algebra of local functionals equipped with a Poisson bracket. We discuss the underlying algebraic structures related to a version of the Courant-Dorfman algebra. As a main illustration, we consider the functionals over the cotangent bund
Externí odkaz:
http://arxiv.org/abs/0903.3215
Publikováno v:
In Journal of Geometry and Physics November 2012 62(11):2259-2278
Publikováno v:
Communications in Mathematical Physics. Mar2013, Vol. 318 Issue 3, p575-613. 39p.