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Progress of Theoretical and Experimental Physics最新文献

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Enhanced classical radiation damping of electronic cyclotron motion in the vicinity of the Van Hove singularity in a waveguide 波导范霍夫奇点附近电子回旋运动的经典辐射阻尼增强
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-02-10 DOI: 10.1093/ptep/ptae021
Yuki Goto, Savannah Garmon, Tomio Petrosky
{"title":"Enhanced classical radiation damping of electronic cyclotron motion in the vicinity of the Van Hove singularity in a waveguide","authors":"Yuki Goto, Savannah Garmon, Tomio Petrosky","doi":"10.1093/ptep/ptae021","DOIUrl":"https://doi.org/10.1093/ptep/ptae021","url":null,"abstract":"We study the damping process of electron cyclotron motion and the resulting emission in a waveguide using the classical Friedrichs model without relying on perturbation analysis such as Fermi’s golden rule. A Van Hove singularity appears at the lower bound (or cut-off frequency) of the dispersion associated with each of the electromagnetic field modes in the waveguide. In the vicinity of the Van Hove singularity, we found that not only is the decay process associated with the resonance pole enhanced (amplification factor ∼104) but the branch-point effect is also comparably enhanced. As a result, the timescale on which most of the decay occurs is dramatically shortened. Further, this suggests that the non-Markovian branch point effect should be experimentally observable in the vicinity of the Van Hove singularity. Our treatment yields a physically-acceptable solution without the problematic runaway solution that is well known to appear in the traditional treatment of classical radiation damping based on the Abraham-Lorentz equation.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gadolinium concentration measurement with an atomic absorption spectrophotometer 用原子吸收分光光度计测量钆的浓度
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-02-10 DOI: 10.1093/ptep/ptae022
Ll Marti, L Labarga
{"title":"Gadolinium concentration measurement with an atomic absorption spectrophotometer","authors":"Ll Marti, L Labarga","doi":"10.1093/ptep/ptae022","DOIUrl":"https://doi.org/10.1093/ptep/ptae022","url":null,"abstract":"Because gadolinium (Gd) has the highest thermal neutron capture cross section, resulting in an 8 MeV gamma cascade upon capture, it has been proposed for dissolution in water Cherenkov detectors to achieve efficient neutron tagging capabilities. While metallic Gd is insoluble in water, several compounds are very easy to dissolve. Gadolinium sulfate, Gd2(SO4)3, has been thoroughly tested and proposed as the best candidate. Accurate measurement of its concentration, free of doubt from impurities in water, is crucial. An atomic absorption spectrophotometer (AAS) is a device that suits this purpose and is widely used to measure the concentration of many elements. In this study, we describe three different approaches to measure Gd sulfate concentrations in water using an AAS: doping samples with potassium and lanthanum, and employing tantalum and tungsten platforms.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139769035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toward nuclear physics from lattice QCD on quantum computers 在量子计算机上从格子 QCD 走向核物理
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-02-07 DOI: 10.1093/ptep/ptae019
Arata Yamamoto, Takumi Doi
{"title":"Toward nuclear physics from lattice QCD on quantum computers","authors":"Arata Yamamoto, Takumi Doi","doi":"10.1093/ptep/ptae019","DOIUrl":"https://doi.org/10.1093/ptep/ptae019","url":null,"abstract":"One of the ultimate missions of lattice QCD is to simulate atomic nuclei from the first principle of the strong interaction. This is an extremely hard task for the current computational technology, but might be reachable in coming quantum computing era. In this paper, we discuss the computational complexities of classical and quantum simulations of lattice QCD. It is shown that the quantum simulation scales better as a function of a nucleon number and thus will outperform for large nuclei.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139769274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Eigenphase distributions of unimodular circular ensembles 单模块圆形集合的特征相分布
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-02-07 DOI: 10.1093/ptep/ptae018
Shinsuke Nishigaki
{"title":"Eigenphase distributions of unimodular circular ensembles","authors":"Shinsuke Nishigaki","doi":"10.1093/ptep/ptae018","DOIUrl":"https://doi.org/10.1093/ptep/ptae018","url":null,"abstract":"Motivated by the study of Polyakov lines in gauge theories, Hanada and Watanabe Hanada and Watanabe [1] recently presented a conjectured formula for the distribution of eigenphases of Haar-distributed random SU(N) matrices (β = 2), supported by explicit examples at small N and by numerical samplings at larger N. In this letter, I spell out a concise proof of their formula, and present its orthogonal and symplectic counterparts, i.e. the eigenphase distributions of Haar-random unimodular symmetric (β = 1) and selfdual (β = 4) unitary matrices parametrizing SU(N)/SO(N) and SU(2N)/Sp(2N), respectively.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Relation between pole and running masses of heavy quarks using the principle of maximum conformality 利用最大共形原理研究重夸克极点质量和运行质量之间的关系
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-02-06 DOI: 10.1093/ptep/ptae020
Daniel Salinas-Arizmendi, Iván Schmidt
{"title":"Relation between pole and running masses of heavy quarks using the principle of maximum conformality","authors":"Daniel Salinas-Arizmendi, Iván Schmidt","doi":"10.1093/ptep/ptae020","DOIUrl":"https://doi.org/10.1093/ptep/ptae020","url":null,"abstract":"The relation of the pole and running heavy quark masses of order O $(alpha _s^4)$ in perturbative quantum chromodynamics (pQCD) can be obtained using the Principle of Maximum Conformality (PMC), a formalism that provides a rigorous method for eliminating renormalization scale and scheme ambiguities for observables in pQCD. Using PMC, an optimal renormalization scale for the heavy quark mass ratio is determined, independent of the renormalization scale and scheme up to order $alpha _s^4$. Precise values are then obtained for the PMC pole masses of the heavy quarks $M_b^{text{PMC}}=4.86^{+0.03}_{-0.02}$ GeV, $M_t^{text{PMC}}=172.3pm 0.6$ GeV, and the running mass $overline{m}_t^{text{PMC}}=162.6pm 0.7$ GeV at the PMC scale.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantum euler angles and agency-dependent spacetime 量子欧拉角和机构依赖时空
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-01-29 DOI: 10.1093/ptep/ptae015
G Amelino-Camelia, V D’Esposito, G Fabiano, D Frattulillo, P A Höhn, F Mercati
{"title":"Quantum euler angles and agency-dependent spacetime","authors":"G Amelino-Camelia, V D’Esposito, G Fabiano, D Frattulillo, P A Höhn, F Mercati","doi":"10.1093/ptep/ptae015","DOIUrl":"https://doi.org/10.1093/ptep/ptae015","url":null,"abstract":"Quantum gravity is expected to introduce quantum aspects into the description of reference frames. Here we begin exploring how quantum gravity induced deformations of classical symmetries could modify the transformation laws among reference frames in an effective regime. We invoke the quantum group SUq(2) as a description of deformed spatial rotations and interpret states of a representation of its algebra as describing the relative orientation between two reference frames. This leads to a quantization of one of the Euler angles and to an aspect of agency dependence: space is reconstructed as a collection of fuzzy points, exclusive to each agent, which depends on their choice of reference frame. Each agent can choose only one direction in which points can be sharp, while points in all other directions become fuzzy in a way that depends on this choice. Two agents making different choices will thus observe the same points with different degrees of fuzziness.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Casimir effect of Lorentz-violating charged Dirac in background magnetic field 背景磁场中违反洛伦兹规则的带电狄拉克的卡西米尔效应
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-01-27 DOI: 10.1093/ptep/ptae016
Ar Rohim, Arista Romadani, Apriadi Salim Adam
{"title":"Casimir effect of Lorentz-violating charged Dirac in background magnetic field","authors":"Ar Rohim, Arista Romadani, Apriadi Salim Adam","doi":"10.1093/ptep/ptae016","DOIUrl":"https://doi.org/10.1093/ptep/ptae016","url":null,"abstract":"We study the effect of the Lorentz violation on the Casimir energy and pressure of charged Dirac in a background uniform magnetic field. In the model, the Lorentz violation is parameterized not only by the intensity but also by its direction. We investigate two cases of the direction of violation, namely, time-like and space-like vector cases. We use the boundary condition of the MIT bag model to represent the property of the plates. We show how the Lorentz violation and the magnetic field affect the structure of the Casimir energy and its pressure. We also investigate the weak and strong magnetic field cases with two different limits, heavy and light masses. In addition, we compute the ratio of the influence of the strong magnetic field to that of the weak ones for the Casimir energy and its pressure. We find that the strong magnetic field enhances the magnitude of the Casimir energy and its pressure, where the parameter of the intensity of Lorentz violation could scale the plate’s distance.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139587355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Search for dark energy with neutron interferometry 用中子干涉测量法寻找暗能量
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-01-25 DOI: 10.1093/ptep/ptae014
Hauke Fischer, Christian Käding, Hartmut Lemmel, Stephan Sponar, Mario Pitschmann
{"title":"Search for dark energy with neutron interferometry","authors":"Hauke Fischer, Christian Käding, Hartmut Lemmel, Stephan Sponar, Mario Pitschmann","doi":"10.1093/ptep/ptae014","DOIUrl":"https://doi.org/10.1093/ptep/ptae014","url":null,"abstract":"We use previously obtained experimental results by neutron interferometry to effectively constrain the parameter space of several prominent dark energy models. This investigation encompasses the environment-dependent dilaton field, a compelling contender for dark energy that emerges naturally within the strong coupling limit of string theory, alongside symmetron and chameleon fields. Our study presents substantial improvements over previous constraints of the dilaton and symmetron fields, improving parameter constraints by several orders of magnitude. However, the analysis does not yield any new constraints on the chameleon field. Furthermore, we establish constraints for the projected neutron split interferometer, which has recently concluded a decisive proof-of-principle demonstration. Our symmetron simulations reveal that depending on the parameter values there are multiple static solutions with increasing number of nodes and increasing energy inside a cylindrical vacuum chamber. This agrees with results obtained earlier in the literature for infinitely parallel plates. Interestingly, while these multiple solutions can correspond to domain walls forming inside the vacuum chamber, we also find solutions that do not reach their vacuum expectation value inside the vacuum chamber, but display multiple nodes nonetheless.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139587377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Heavy ion injection of fixed-field alternating gradient accelerator 固定场交变梯度加速器的重离子注入
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-01-25 DOI: 10.1093/ptep/ptae017
Yujiro Yonemura, Hidehiko Arima, Hiroki Nishibata, Takashi Teranishi, Tomotsugu Wakasa, Nobuo Ikeda, Kenichi Watanabe, Nobuhiro Shigyo, Tatsunori Iwamura, Kyosuke Adachi, Koki Takamatsu, Motoki Kotani, Hisato Tanaka, Rintaro Matsunaga, Taichi Matsumoto, Kyohei Takenaka, Takafumi Kajihara, Sotaro Matsunaga, Yusuke Shinohara, Yoshiharu Mori
{"title":"Heavy ion injection of fixed-field alternating gradient accelerator","authors":"Yujiro Yonemura, Hidehiko Arima, Hiroki Nishibata, Takashi Teranishi, Tomotsugu Wakasa, Nobuo Ikeda, Kenichi Watanabe, Nobuhiro Shigyo, Tatsunori Iwamura, Kyosuke Adachi, Koki Takamatsu, Motoki Kotani, Hisato Tanaka, Rintaro Matsunaga, Taichi Matsumoto, Kyohei Takenaka, Takafumi Kajihara, Sotaro Matsunaga, Yusuke Shinohara, Yoshiharu Mori","doi":"10.1093/ptep/ptae017","DOIUrl":"https://doi.org/10.1093/ptep/ptae017","url":null,"abstract":"Much research in recent years has focused on circular accelerators that accelerate and store secondary particles with a large momentum spread, such as muons, unstable nuclei and heavy ions with different charge states. A fixed field alternating gradient (FFAG) accelerator with large transverse and momentum acceptance has obvious advantages for such requirements. A versatile beam injection method is required to accelerate secondary particles with a large momentum spread and different charge states with an FFAG accelerator. In the present study, a method for charge exchange injection of positive heavy ions using the large momentum acceptance of an FFAG accelerator is proposed. A charge injection system, which converts a He1 + beam to a He2 + beam, is developed for a 150 MeV FFAG accelerator at the Center for Accelerator and Beam Applied Science (CABAS) of Kyushu University. As the first step to verify the injection method, orbits shift from one charge state to the other is demonstrated. This is the first demonstration of heavy ion injection using an FFAG accelerator.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139587187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analytic electrical charged black holes in F(R)-ModMax theory F(R)-ModMax 理论中的解析带电黑洞
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-01-24 DOI: 10.1093/ptep/ptae012
Behzad Eslam Panah
{"title":"Analytic electrical charged black holes in F(R)-ModMax theory","authors":"Behzad Eslam Panah","doi":"10.1093/ptep/ptae012","DOIUrl":"https://doi.org/10.1093/ptep/ptae012","url":null,"abstract":"Motivated by a new model of nonlinear electrodynamics known as Modified Maxwell (ModMax) theory, an exact analytical solution for black holes is obtained by coupling ModMax nonlinear electrodynamics and F(R) gravity. Then, the effects of the system’s parameters (F(R)-ModMax gravity parameters) on the event horizons are analyzed. The obtained black holes thermodynamic properties in the F(R)-ModMax theory are investigated by extracting their thermodynamic quantities such as Hawking temperature, electric charge, electric potential, entropy, and also total mass. The first law of thermodynamics for the system under study is evaluated. Next, by considering these black holes, the impact of various parameters on both the local stability and global stability are investigated by examining the heat capacity and the Helmholtz free energy, respectively. Finally, the thermodynamic geometry of the black hole in F(R)-ModMax gravity is investigated by applying the thermodynamic metric (the HPEM metric).","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139551492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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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