Lettere al Nuovo Cimento

Publications in this journal

• Article: On the equations of motion for particles with arbitrary spin in non-relativistic mechanics

  W. I. Fushchich, A. G. Nikitin, and V.A. Salogub
  Lettere al Nuovo Cimento 02/2013; 14(13):483-488.
• Article: On the invariance groups of relativistic equations for spinning particles interacting with external fields

  W. I. Fushchich and A. G. Nikitin
  Lettere al Nuovo Cimento 02/2013; 21(16):541-546.
• Source

  Available from: arxiv.org

  Article: Thin Dielectric Films in Superconducting Cavities

  E. L. Garwin, Mario Rabinowitz
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  ABSTRACT: At high field levels, field emission losses in superconducting cavities have an adverse effect in both reducing the otherwise extremely high Q > 10^9, and the magnetic breakdown field bringing it well below the critical magnetic field of the superconductor. The two effects may well be related as field enhancing whiskers responsible for the field emission losses can be driven normal thus reducing the magnetic breakdown field. Both the beneficial and deleterious effects of anodizing the inner surface of superconducting cavities are discussed and analyzed.
  Lettere al Nuovo Cimento 07/2003; 2(9).
• Article: Scalar plane waves in general relativity

  M. Halilsoy
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  ABSTRACT: A more general class of scalar plane waves is presented in general relativity. It is shown that no matter how the scalar field is modified, space-time possesses an essential singularity.
  Lettere al Nuovo Cimento 11/1985; 44(8):544-546.
• Article: Possible evidence for gravitational bohr orbits in double galaxies

  M. DerSarkissian
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  ABSTRACT: It is suggested that a double galaxy may be the cosmic analog of a hydrogen atom, in the sense that quantum mechanics applies to both. An empirica approach is suggested to explore a possible Bohr model for double galaxies and some preliminary calculations are presented. The calculations provide cautious support for gravitational Bohr orbits in double galaxies.
  Lettere al Nuovo Cimento 11/1985; 44(8):629-636.
• Article: The high-energy muon flux in air showers from Cygnus X-3

  A. Castellina, B. D’Ettorre Piazzoli, G. Mannocchi, P. Picchi, S. Vernetto, H. Bilokon, E. Meroni
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  ABSTRACT: The underground muon intensity induced by the primaries producing the air shower signal from Cygnus X-3 has been calculated, in both hypothesis of their hadronic or photonic nature. The muon flux measured in NUSEX and SOUDAN experiments is found to be considerably higher than that expected from conventional interactions of the primaries. It is, therefore, impossible to explain both air shower and underground muon fluxes in the frame of conventional interactions.
  Lettere al Nuovo Cimento 11/1985; 44(7):491-496.
• Article: Bulk viscosity and the inflationary universe

  G. Papini, M. Weiss
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  ABSTRACT: Phase transitions from a universe with nonnegligible bulk viscosity to an inflationary one are possible only if viscosity virtually disappears in the process. This suggests the phase change involved is of the type normal fluid to superfluid. Some exact solutions of Einstein equations for a viscous fluid are also given. They show the subtle interplay of viscosity and equations of state.
  Lettere al Nuovo Cimento 11/1985; 44(8):612-616.
• Article: A dynamical basis for the de Broglie phase wave

  M. H. Mac Gregor
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  ABSTRACT: Using the kinematic equations of perturbative special relativity (PSR), which are valid in the limit of small momentum transfers, we derive the particle-wave velocity equationvw = c 2, thereby providing a dynamical basis for the de Broglie phase wave. This same PSR calculation also demonstrates that 1) the phase wave is accurately planar, and 2) the quanta of the phase wave are tachyons.
  Lettere al Nuovo Cimento 11/1985; 44:697-704.
• Article: The role of ZZ-EZ isomerization in the photochemistry of bilirubin bound to human-serum albumin «in vitro»

  F. Fusi, G. Agati, R. Pratesi
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  ABSTRACT: The EZ isomer of BE/HSA is shown to contribute to the ZZ →← ZE photoisomerization of BR/HSA through the excitation of a twisted-state intermediate. Although this isomer is present at extremely low concentration in the photoproducts of BR when bound to HSA, it represents a high quantum yield relaxation channel, competing with the ZZ-ZE isomerization, for the decay of excited BR/HSA to its ground state. Quantitative agreement between theoretical and experimental values of the photoequilibrium rise-times of ZZ →← ZE isomerization of BR/HSA is now obtained. Our results give further support to the recent hypothesis that the EZ isomer is an intermediate in the formation of the cyclized structural isomer of BR/HSA (lumirubin).
  Lettere al Nuovo Cimento 11/1985; 44(7):477-481.
• Article: Estimation of prompt cosmic-ray muon flux at high energies

  T. Minorikawa, K. Mitsui
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  ABSTRACT: The prompt cosmic-ray muon flux at high energies is calculated by using a more realistic model of inclusive charm production and recent experimental results on primary spectrum in which a « knee » is taken into account. The critical energy is estimated to be 220 TeV and 1200 TeV at the zenith angle 0° and 90°, respectively.
  Lettere al Nuovo Cimento 11/1985; 44:651-657.
• Article: Line-tunable, high-efficiency, single-mode, mini-TEA CO2 laser with corona preionization

  S. Marchetti, E. Simili, M. Giorgi
  Lettere al Nuovo Cimento 11/1985; 44(7):442-444.
• Article: The paradox of constant planetary mass as evidence of a leptonic lattice-structured vacuum state

  H. Aspden
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  ABSTRACT: The constancy of velocity momenth in the equations of planetary motion has been well verified by their accuracy in accounting for perihelion advance. There is, however, an implicit paradox, because the conservation of angular momentum requires constancy of planetary mass, even though speed in orbit varies. One way of resolving this paradox appears in the conformable properties of a lattice-structured vacuum state of recent record, which provides also a quantum connection, in having given account for Planck’s radiation law and a theoretical evaluation of the fine-structure constant in precise accord with its measured value.
  Lettere al Nuovo Cimento 11/1985; 44:705-709.
• Article: The de Broglie wave derivation for material particle diffraction re-examined: a re-derivation without matter waves

  R. T. Bush
  Lettere al Nuovo Cimento 11/1985; 44:683-686.
• Article: On large-scale quantization

  J. C. Carvalho
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  ABSTRACT: We discuss the problem of quantization effects in a large, astronomical scale. Using the same formalism of quantum mechanics, but with the equivalent of Planck constant depending upon the gravitational field, we study the problem of the galaxy red-shift and of the hydrogen-type gravitational atom.
  Lettere al Nuovo Cimento 10/1985; 44(6):337-342.
• Source

  Available from: cern.ch

  Article: A new method for high luminosity

  K. Takayama, A. Ando
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  ABSTRACT: We propose a new method to increase a luminosity in colliding machines, where collective focusing of high-current anti-charged streams are employed as final focusing lenses instead of usual high-gradient magnets. It is shown that a counter streaming pair of a cylindrical positron and hollow electron beams produces necessary focusing forces to lead to a high luminosity, avoiding significant beam-beam effects of themselves.
  Lettere al Nuovo Cimento 10/1985; 44(5):281-288.
• Article: The eigenvalue problem for the three-wave resonant interaction in (2+1) dimensions via the prolongation structure

  G. S. Tondo
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  ABSTRACT: A non-abelian prolongation algebra for the three-wave resonant equations in one time and two spatial dimensions is derived. ASL 3,C quotient algebra is used to find the linear eigenvalue problem associated with the equations under consideration.
  Lettere al Nuovo Cimento 10/1985; 44(5):297-302.
• Article: Underground muon energy spectrum and its relevance for muon astronomy

  A. Castellina, B. D’Ettorre Piazzoli, G. Mannocchi, P. Picchi, S. Vernetto, H. Bilokon, E. Meroni
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  ABSTRACT: A striking result from the NUSEX (1) and SOUDAN (2) experiments is the discovery of a high flux of muons from the direction of Cygnus X-3 displaying the typical 4.8 hour time modulation of this source. The differential energy spectrum of these muons is much flatter (γ∼2) than that for ordinary atmospheric muons (γ∼3.71). This implies a very different shape for the local deep underground muon energy spectrum. We show that a measurement of the content of high-energy muons (> 500 GeV) in underground experiments is a strong signature of their origin.
  Lettere al Nuovo Cimento 10/1985; 44(6):401-404.
• Article: A reciprocal Bäcklund transformation: Application to a nonlinear hyperbolic model in heat conduction

  C. Rogers, T. Ruggeri
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  ABSTRACT: An involutory Bäcklund transformation is used to linearize a class of nonlinear evolution equations. Application is made to a recent model in nonlinear heat conduction.
  Lettere al Nuovo Cimento 10/1985; 44(5):289-296.
• Article: Quark gluon plasma and multiplicity dependence of transverse momentum in hadronic collisions

  R. Campanini
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  ABSTRACT: I propose experimental tests to examine the origin of the average dependence on hadron-hadron events multiplicity and to verify some possible implications of the existence of high-temperature phase transition to quark-gluon plasma. I suggest that evidences may already exist of this transition in SPS collider and ISR events with central rapidity density dn/dy within an interval of one or two units around 6.
  Lettere al Nuovo Cimento 10/1985; 44(6):343-350.
• Article: EMC effect and hadronic gas phase

  T. Kawabe
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  ABSTRACT: On the basis of the two-phase picture for hadronic matter it is suggested that the observed difference between the structure functions from deuterium and heavier-nucleus targets is due to the contribution from hadronic gas phase in a big nucleus. It suffices for reproducing the data to assume that the temperature of the interacting region is about (30÷40) MeV and the hadronic gas fractions to the structure functions are about 16% for aluminium and 22% for aurum targets.
  Lettere al Nuovo Cimento 09/1985; 44(3):159-162.