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Acta Physica Hungarica B) Quantum Electronics最新文献

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Attosecond neutron compton scattering from protons entangled with adjacent electrons 质子与邻近电子纠缠产生的阿秒中子康普顿散射
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.24
C. Chatzidimitriou-Dreismann
{"title":"Attosecond neutron compton scattering from protons entangled with adjacent electrons","authors":"C. Chatzidimitriou-Dreismann","doi":"10.1556/APH.26.2006.1-2.24","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.24","url":null,"abstract":"The effect of “anomalous” scattering of neutrons and electrons from protons in the electron-volt energy-transfer range is considered, and related experimental results are mentioned. A recent independent confirmation of this effect with a new data analysis procedure is presented. Due to the very short characteristic scattering time, there is no well defined separation of time scales of electronic and protonic motions. An outline of a proposed theoretical interpretation is presented, which is based on the fact that scattering protons represent open quantum systems, thus being subject to decoherence.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124772975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Dispersion forces within the framework of macroscopic QED 宏观QED框架内的色散力
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.2
C. Raabe, D. Welsch
{"title":"Dispersion forces within the framework of macroscopic QED","authors":"C. Raabe, D. Welsch","doi":"10.1556/APH.26.2006.1-2.2","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.2","url":null,"abstract":"Dispersion forces, which material objects in the ground state are subject to, originate from the Lorentz force with which the fluctuating, objectassisted electromagnetic vacuum acts on the fluctuating charge and current densities associated with the objects. We calculate them within the framework of macroscopic QED, considering magnetodielectric objects described in terms of spatially varying permittivities and permeabilities which are complex functions of frequency. The result enables us to give a unified approach to dispersion forces on both macroscopic and microscopic levels.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114056311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Critical velocities for energy dissipation from periodic motions of impurity in Bose—Einstein condensates 玻色-爱因斯坦凝聚体中杂质周期性运动能量耗散的临界速度
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-05-18 DOI: 10.1556/APH.26.2006.1-2.17
J. Suzuki
{"title":"Critical velocities for energy dissipation from periodic motions of impurity in Bose—Einstein condensates","authors":"J. Suzuki","doi":"10.1556/APH.26.2006.1-2.17","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.17","url":null,"abstract":"A phenomenon of energy dissipation in Bose—Einstein condensates is studied based on a microscopic model for the motion of impurity. Critical velocities for the onset of energy dissipation are obtained for periodic motions, such as a dipole-like oscillation and a circular motion. The first example is similar to a series of MIT group experiments settings where the critical velocity was observed much below the Landau critical velocity. The appearance of the smaller values for the critical velocity is also found in our model, even in the homogeneous condensate in the thermodynamic limit. This suggests that the Landau criterion be reexamined in the absence of quantized vortices even in the bulk limit.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134443974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Neutron holography 中子全息术
Acta Physica Hungarica B) Quantum Electronics Pub Date : 1900-01-01 DOI: 10.1556/APH.26.2006.1-2.22
L. Cser, G. Krexner, M. Marko, I. Sharkov, G. Török
{"title":"Neutron holography","authors":"L. Cser, G. Krexner, M. Marko, I. Sharkov, G. Török","doi":"10.1556/APH.26.2006.1-2.22","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.22","url":null,"abstract":"The basic concept of the atomic resolution neutron holography is briefly described. It can be realised by two different schemes. In the frame of the first approach a point-like source of slow neutrons has to be produced inside of the investigated crystal. Due to the extremely large value of the incoherent scattering cross section of the proton, hydrogen atoms imbedded in a metal single crystal lattice may serve as point-like sources as the sample irradiated by a monochromatic beam of slow neutrons. The second approach utilizes the registration of the interference between the incident and scattered beams by means of a point-like detector inserted in the lattice of the crystal under investigation. Examples demonstrating the feasibility of these ideas are presented.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124464495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On the Direction of Decoherence in the Morse Potential 莫尔斯电势退相干方向的研究
Acta Physica Hungarica B) Quantum Electronics Pub Date : 1900-01-01 DOI: 10.1556/aph.20.2004.1-2.2
F. Martini, C. Sias, F. Sciarrino
{"title":"On the Direction of Decoherence in the Morse Potential","authors":"F. Martini, C. Sias, F. Sciarrino","doi":"10.1556/aph.20.2004.1-2.2","DOIUrl":"https://doi.org/10.1556/aph.20.2004.1-2.2","url":null,"abstract":"","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124609639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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