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9 papers
Hydrodynamic covariant symplectic structure from bilinear Hamiltonian functions
S. Capozziello, S. De Martino, S. I. Tzenov
Starting from generic bilinear Hamiltonians, constructed by covariant vector, bivector or tensor fields, it is possible to derive a general symplectic structure which leads to holo…
Iterative Maps with Hierarchical Clustering for the Observed Scales of Astrophysical and Cosmological Structures
S. Capozziello, S. De Martino, S. De Siena +2
We derive, in order of magnitude, the observed astrophysical and cosmological scales in the Universe, from neutron stars to superclusters of galaxies, up to, asymptotically, the ob…
Controlled quantum evolutions
Nicola Cufaro Petroni, Salvatore De Martino, Silvio De Siena +1
We perform a detailed analysis of the non stationary solutions of the evolution (Fokker-Planck) equations associated to either stationary or non stationary quantum states by the st…
Stability and size of galaxies from Planck's constant
Salvatore Capozziello, Salvatore De Martino, Silvio De Siena +1
Stability and characterisitic geometrical and kinematical sizes of galaxies are strictly related to a minimal characteristic action whose value is of order , the Planck constant…
Quantum Signature of Cosmological Large Scale Structures
Salvatore Capozziello, Salvatore De Martino, Silvio De Siena +1
We demonstrate that to all large scale cosmological structures where gravitation is the only overall relevant interaction assembling the system (e.g. galaxies), there is associated…
A stochastic model for the semiclassical collective dynamics of charged beams in particle accelerators
Salvatore De Martino, Silvio De Siena, Fabrizio Illuminati
A recent proposal (see quant-ph/9803068) to simulate semiclassical corrections to classical dynamics by suitable classical stochastic fluctuations is applied to the specific instan…