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5 papers · 1 filter
Relativistic phase shifts for Dirac particles interacting with weak gravitational fields in matter-wave interferometers
Christian J. Bordé, Jean-Claude Houard, Alain Karasiewicz
We present a second-quantized field theory of massive spin one-half particles or antiparticles in the presence of a weak gravitational field treated as a spin two external field in…
On the Eisenstein symbol
J. Wildeshaus
The main purpose of this paper is the geometric construction, and the analysis of the formalism of elliptic Bloch groups. In the setting of absolute cohomology, we obtain a general…
Combinatorial Differential Forms
Lawrence Breen, William Messing
We extend to a scheme-theoretic context the notion of a combinatorial differential form, due to A.Kock in the framework of synthetic differential geometry. We show that group-value…
Résolutions de Demazure affines et formule de Casselman-Shalika géométrique
B. C. Ngo, P. Polo
We prove a conjecture of Frenkel, Gaitsgory, Kazhdan and Vilonen, related to Fourier coefficients of spherical perverse sheaves on the affine Grassmannian associated to a a split r…
Bosonic Monocluster Expansion
A. Abdesselam, J. Magnen, V. Rivasseau
We compute connected Green's functions of a Bosonic field theory with cutoffs by means of a ``minimal'' expansion which in a single move, interpolating a generalized propagator, pe…