spinor, bundle, differential, geometry, given, spin, structure, displaystyle, dimensional, orientable, riemannian, manifold, displaystyle, defines, spinor, bundle, complex, vector, bundle, displaystyle, mathbf, colon, mathbf, associated, corresponding, princip. In differential geometry given a spin structure on an n displaystyle n dimensional orientable Riemannian manifold M g displaystyle M g one defines the spinor bundle to be the complex vector bundle p S S M displaystyle pi mathbf S colon mathbf S to M associated to the corresponding principal bundle p P P M displaystyle pi mathbf P colon mathbf P to M of spin frames over M displaystyle M and the spin representation of its structure group S p i n n displaystyle mathrm Spin n on the space of spinors D n displaystyle Delta n A section of the spinor bundle S displaystyle mathbf S is called a spinor field Contents 1 Formal definition 2 See also 3 Notes 4 Further readingFormal definition editLet P F P displaystyle mathbf P F mathbf P nbsp be a spin structure on a Riemannian manifold M g displaystyle M g nbsp that is an equivariant lift of the oriented orthonormal frame bundle F S O M M displaystyle mathrm F SO M to M nbsp with respect to the double covering r S p i n n S O n displaystyle rho colon mathrm Spin n to mathrm SO n nbsp of the special orthogonal group by the spin group The spinor bundle S displaystyle mathbf S nbsp is defined 1 to be the complex vector bundleS P k D n displaystyle mathbf S mathbf P times kappa Delta n nbsp associated to the spin structure P displaystyle mathbf P nbsp via the spin representation k S p i n n U D n displaystyle kappa colon mathrm Spin n to mathrm U Delta n nbsp where U W displaystyle mathrm U mathbf W nbsp denotes the group of unitary operators acting on a Hilbert space W displaystyle mathbf W nbsp It is worth noting that the spin representation k displaystyle kappa nbsp is a faithful and unitary representation of the group S p i n n displaystyle mathrm Spin n nbsp 2 See also editClifford bundle Clifford module bundle Orthonormal frame bundle Spin geometry Spinor Spinor representationNotes edit Friedrich Thomas 2000 Dirac Operators in Riemannian Geometry American Mathematical Society ISBN 978 0 8218 2055 1 page 53 Friedrich Thomas 2000 Dirac Operators in Riemannian Geometry American Mathematical Society ISBN 978 0 8218 2055 1 pages 20 and 24Further reading editLawson H Blaine Michelsohn Marie Louise 1989 Spin Geometry Princeton University Press ISBN 978 0 691 08542 5 Friedrich Thomas 2000 Dirac Operators in Riemannian Geometry American Mathematical Society ISBN 978 0 8218 2055 1 nbsp This differential geometry related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Spinor bundle amp oldid 1160659913, wikipedia, wiki, book, books, library,