Results 261 to 270 of about 1,040,020 (296)

Realism and quantum flux tunneling

Physical Review Letters, 1987
Leggett and Garg have argued that the phenomenon of quantum flux tunneling oscillations will, according to the predictions of quantum mechanics, contradict the pair of assumptions ``macroscopic realism'' and ``noninvasive measurability.'' It is argued here that there can be no contradiction of realism in such a case, and that the contradiction is ...
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Mesoscopic quantum tunneling of the magnetization

Journal of Magnetism and Magnetic Materials, 1995
Abstract Magnetic relaxation plateaux observed at low temperature in complex systems, are generally attributed to Quantum Tunneling of the Magnetization (QTM). If the experiments are not performed down to low enough temperatures, alternative interpretations can be given in terms of powerlaw distributions resulting from either switching field ...
BARBARA B, WERNSDORFER W, SAMPAIO LC, PARK JG, PAULSEN C, NOVAK MA, FERRE R, MAILLY D, SESSOLI, ROBERTA, CANESCHI, ANDREA, HASSELBACH K, BENOIT A, THOMAS L.   +12 more
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Quantum Tunneling

2017
Abstract Quantum tunneling, wherein a quanject has a non-zero probability of tunneling into and then exiting a barrier of finite width and height, is the subject of Chapter 13. The description for the one-dimensional case is extended to the barrier being inverted, which forms an attractive potential well.
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Quantum tunneling in dissipative systems

Physical Review A, 1993
As a prelude to a discussion of tunneling in the presence of dissipation, we discuss the damped harmonic oscillator. We show that for a harmonic-oscillator potential, the Caldeira-Leggett Hamiltonian can be reduced to a sum of independent harmonic-oscillator Hamiltonians by a normal-mode transformation.
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Quantum uncertainty effect in tunneling

Physical Review Letters, 1991
It is shown that electron tunneling from a very narrow tip should be effected, in an essential manner, by the quantum uncertainty in its transverse momentum induced by the confinement in the tip. This effect produces a strong asymmetry in the current-voltage characteristics of the tunnel junction, and to other unusual consequences.
, Ivanchenko, , Riseborough
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Wigner trajectories in quantum tunneling

Physics Letters A, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Quantum tunneling

NVOX : Tijdschrift voor Natuurwetenschap op School
Quantum tunneling is een ideaal onderwerp om de verschillende begrippen van de quantumfysica samen te brengen in een tweetal lessen: golfeigenschappen van deeltjes, golffunctie en waarschijnlijkheidsverdeling, en energiebarrières. En wat denken leerlingen bij deze begrippen? Dat krijgen we handig te zien in het logboek van hun digitale antwoorden.
Vilarta Rodriguez, Luiza, van den Berg, Ed, de Jong, Ton, Krijtenburg - Lewerissa, Kim, van der Veen, Jan   +4 more
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Quantum tunneling in a dissipative system

Physical Review A, 1996
Applying a technique developed recently [L. H. Yu and C. P. Sun, Phys. Rev. A {bold 49}, 592 (1994); L. H. Yu, Phys. Lett. {bold 202}, 167 (1995)] for a harmonic oscillator coupled to a bath of harmonic oscillators, we present an exact solution for the tunneling problem in an Ohmic dissipative system with inverted harmonic potential.
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Quantum Tunneling

2016
Benjamin Bahr, Boris Lemmer, Rina Piccolo   +2 more
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Dynamical quasidegeneracies and quantum tunneling

Physical Review Letters, 1991
A Comment on the Letter by W. A. Lin and L. E. Ballentine, Phys. Rev. Lett. 65, 2927 (1990).
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