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Europhysics Letters (EPL), 1986
A WKB formalism is presented to describe the quantum dynamics, including tunnelling, of a single spin with large spin quantum number. This is of particular relevance to the treatment of Hamiltonians with a large anisotropy. For a wide class of Hamiltonians we obtain the eigenstates and tunnelling rates and show the universal dependence of the latter ...
J.L. Van Hemmen, A. Sütö
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A WKB formalism is presented to describe the quantum dynamics, including tunnelling, of a single spin with large spin quantum number. This is of particular relevance to the treatment of Hamiltonians with a large anisotropy. For a wide class of Hamiltonians we obtain the eigenstates and tunnelling rates and show the universal dependence of the latter ...
J.L. Van Hemmen, A. Sütö
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Quantum tunneling, dynamical symmetry, and quantum revival
Physical Review E, 1996Quantum tunneling dynamics of a periodically driven symmetric double-well system is studied within the framework of the Floquet theory. The role that a dynamical symmetry of the system plays in connection with tunneling is analyzed. The analysis shows that, in order to fully describe tunneling exhibited by a system with a dynamical symmetry, one should
, Shin, , Lee
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Driven quantum tunneling [PDF]
Physics Reports, 1998 A contemporary review on the behavior of driven tunneling in quantum systems is presented. Diverse phenomena, such as control of tunneling, higher harmonic generation, manipulation of the population dynamics and the interplay between the driven tunneling dynamics and dissipative effects are discussed.
Grifoni, Milena, Hänggi, Peter
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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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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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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 +4 more
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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 +4 more
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Superfluid quantum 'tunnelling'
Physics World, 1988Striking observations of quantised events in superfluid flow through a microscopic orifice have been made recently at Orsay, France. Sudden, stepwise reductions of the flow velocity at the critical velocity threshold, seen both in superfluid 3He and 4He, are interpreted as slips by 2π of the phase of the quantum mechanical wavefunction that describes ...
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American Journal of Physics, 1966
An elementary method is given for the exact determination of the quantum mechanical transmission and reflection coefficients for a rectangular one-dimensional potential barrier. The method also finds application in approximate solutions for multistep barriers.
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An elementary method is given for the exact determination of the quantum mechanical transmission and reflection coefficients for a rectangular one-dimensional potential barrier. The method also finds application in approximate solutions for multistep barriers.
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Pramana, 1985
It was shown earlier that during quantum mechanical tunnelling, a microscopic particle has a distributed probability of emission about its original energy and is not constrained to be field-emitted only at its initial energy. Such an energy distribution process appears obvious on the quantum theory of observation and measurement which relates the ...
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It was shown earlier that during quantum mechanical tunnelling, a microscopic particle has a distributed probability of emission about its original energy and is not constrained to be field-emitted only at its initial energy. Such an energy distribution process appears obvious on the quantum theory of observation and measurement which relates the ...
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2002
Abstract A distinguishing feature of quantum mechanics, as compared with classical mechanics, is the phenomenon of matter exhibiting wave-like properties. A direct consequence of this wave property of particles is the tunneling of particles through potential energy barriers.-3 The classical particle is forbidden from penetrating the ...
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Abstract A distinguishing feature of quantum mechanics, as compared with classical mechanics, is the phenomenon of matter exhibiting wave-like properties. A direct consequence of this wave property of particles is the tunneling of particles through potential energy barriers.-3 The classical particle is forbidden from penetrating the ...
openaire +1 more source