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- Istituto Nazionale di Fisica Nucleare, Sezione di MilanoIT23 papers
- Politecnico di MilanoIT8 papers
- University of InsubriaIT7 papers
- University of CopenhagenDK5 papers
- Centre National de la Recherche ScientifiqueFR4 papers
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- University of GenoaIT4 papers
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- European Organization for Nuclear ResearchCH3 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3 papers
6 papers · 1 filter
Mapping the geometry of the E6 group
Fabio Bernardoni, Sergio L. Cacciatori, Bianca L. Cerchiai +1
In this paper we present a construction for the compact form of the exceptional Lie group E6 by exponentiating the corresponding Lie algebra e6, which we realize as the the sum of…
Grassmann Integral Representation for Spanning Hyperforests
Sergio Caracciolo, Alan D. Sokal, Andrea Sportiello
Given a hypergraph G, we introduce a Grassmann algebra over the vertex set, and show that a class of Grassmann integrals permits an expansion in terms of spanning hyperforests. Spe…
Some results on the Zeeman topology
Giacomo Dossena
In a 1967 paper, Zeeman proposed a new topology for Minkowski spacetime, physically motivated but much more complicated than the standard one. Here a detailed study is given of som…
Symmetry of stochastic equations
Giuseppe Gaeta
Symmetry methods are by now recognized as one of the main tools to attack deterministic differential equations (both ODEs and PDEs); the situation is quite different for what conce…
On the expansion of the Kummer function in terms of incomplete Gamma functions
Carlo Morosi, Livio Pizzocchero
The expansion of Kummer's hypergeometric function as a series of incomplete Gamma functions is discussed, for real values of the parameters and of the variable. The error performed…
Spectral duality and distribution of exponents for transfer matrices of block tridiagonal Hamiltonians
L. Molinari
I consider a general block tridiagonal matrix and the corresponding transfer matrix. By allowing for a complex Bloch parameter in the boundary conditions, the two matrices are rela…