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math-ph2019★ 10 cited
Persymmetric Jacobi matrices with square-integer eigenvalues and dispersionless mass-spring chains
Ruggero Vaia, Lidia Spadini
A real persymmetric Jacobi matrix of order whose eigenvalues are is presented, with entries given as explicit functions of . Besides the possible us…
q-fin.CP2019★ 3 cited
Physics and Derivatives: Effective-Potential Path-Integral Approximations of Arrow-Debreu Densities
Luca Capriotti, Ruggero Vaia
We show how effective-potential path-integrals methods, stemming on a simple and nice idea originally due to Feynman and successfully employed in Physics for a variety of quantum t…