Resonant Tunneling Charge Detection and Dephasing

Lee, Youngnae; Khym, Gyong Luck; Kang, Kicheon

doi:10.3938/jkps.51.2004

Cited by 8 publications

(6 citation statements)

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“…One more very popular approach to the problem [13,14,15,16,17,18,19,20,21] consisted in taking into account internal motion of the quark-antiquark pair in charmonium. Some other interesting points of view on this problem were proposed in papers [22,23,24].…”

Section: Introductionmentioning

confidence: 99%

Double charmonium production atBfactories within light cone formalism

Брагута

2009

Phys. Rev. D

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′ c within light cone formalism. It is shown that if one disregards the contribution of higher fock states, the twist-3 distribution amplitudes needed in the calculation can be unambiguously determined from the twist-2 distribution amplitudes and equations of motion. Using models of the twist-2 distribution amplitudes the cross sections of the processes under study have been calculated. The results of the calculation are in agreement with Belle and BaBar experiments. It is also shown that relativistic and radiative corrections to the cross sections play crucial role in the achievement of the agreement between the theory and experiments. The comparison of the results of this paper with the results obtained in other papers has been carried out. In particular, it is shown that the results of papers where relativistic and radiative corrections were calculated within NRQCD are overestimated by a factor of ∼ 1.5.

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Section: Introductionmentioning

confidence: 99%

Double charmonium production atBfactories within light cone formalism

Брагута

2009

Phys. Rev. D

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Section: Introductionmentioning

confidence: 99%

Double charmonium production at B factories within light cone formalism

Брагута¹

2012

Proceedings of VIIIth Conference Quark Confinement and the Hadron Spectrum — PoS(ConfinementVIII)

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This paper is devoted to the study of the processes e + e − → J/Ψηc, J/Ψη ′ c , ψ ′ ηc, ψ ′ η ′ c within light cone formalism. It is shown that if one disregards the contribution of higher fock states, the twist-3 distribution amplitudes needed in the calculation can be unambiguously determined from the twist-2 distribution amplitudes and equations of motion. Using models of the twist-2 distribution amplitudes the cross sections of the processes under study have been calculated. The results of the calculation are in agreement with Belle and BaBar experiments. It is also shown that relativistic and radiative corrections to the cross sections play crucial role in the achievement of the agreement between the theory and experiments. The comparison of the results of this paper with the results obtained in other papers has been carried out. In particular, it is shown that the results of papers where relativistic and radiative corrections were calculated within NRQCD are overestimated by a factor of ∼ 1.5.

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“…The phase coherence of electron transport through a quantum dot (QD) was displayed by the oscillation of the current in an Aharonov-Bohm (AB) interferometer as a function of the magnetic flux [5,6]. An Electronic which-path interferometer has been realized by using an AB interferometer containing a quantum dot (QD) with a nearby quantum point contact (QPC) [7][8][9] that is able to detect the charge state of the QD. The which-path detection is made via the QD-charge de- * E-mail: kckang@chonnam.ac.kr pendence of the current through the QPC.…”

Section: Introductionmentioning

confidence: 99%

Complementarity in a Closed-Loop Aharonov-Bohm Interferometer

Khym¹,

Kang

Chang

et al. 2008

J. Korean Phy. Soc.

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We study complementarity in a two-terminal closed-loop Aharonov-Bohm interferometer with a quantum dot embedded in an arm of the ring and a nearby charge detector capacitively coupled to the quantum dot. We show that perfect charge detection does not give full information of the electronic path, so it does not completely suppress the interference. We propose that this property can be verified even in the limit of weak charge detection by investigating the dephasing of the first and the second harmonics of the Aharonov-Bohm oscillation. The first harmonic of the AB oscillation is reduced monotonically as a function of the charge detection strength. In contrast, the second harmonic interference remains unaffected due to the fact that charge detection is not able to detect the electronic path responsible for the second harmonic. Our theory confirms that the particle-like behavior of an electron emerges from the path information itself rather than from the disturbance.

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Resonant Tunneling Charge Detection and Dephasing

Cited by 8 publications

References 0 publications

Double charmonium production atBfactories within light cone formalism

Double charmonium production atBfactories within light cone formalism

Double charmonium production at B factories within light cone formalism

Complementarity in a Closed-Loop Aharonov-Bohm Interferometer

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