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Functional determinant approach investigations of heavy impurity physics 重杂质物理学的函数行列式方法研究
AAPPS Bulletin Pub Date : 2023-09-26 DOI: 10.1007/s43673-023-00092-5
Jia Wang
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引用次数: 0
Fokker-Planck equations for a trapped particle in a quantum-thermal Ohmic bath: general theory and applications to Josephson junctions 量子热欧姆浴中被困粒子的福克-普朗克方程：一般理论及约瑟夫森结的应用
AAPPS Bulletin Pub Date : 2023-09-19 DOI: 10.1007/s43673-023-00087-2
Koichiro Furutani, Luca Salasnich
{"title":"Fokker-Planck equations for a trapped particle in a quantum-thermal Ohmic bath: general theory and applications to Josephson junctions","authors":"Koichiro Furutani,&nbsp;Luca Salasnich","doi":"10.1007/s43673-023-00087-2","DOIUrl":"10.1007/s43673-023-00087-2","url":null,"abstract":"<div><p>We consider a particle trapped by a generic external potential and under the influence of a quantum-thermal Ohmic bath. Starting from the Langevin equation, we derive the corresponding Schwinger-Keldysh action. Then, within the path-integral formalism, we obtain both the semiclassical Fokker-Planck equation and the quantum Fokker-Planck equation for this out-of-equilibrium system. In the case of an external harmonic potential and in the underdamped regime, we find that our Fokker-Planck equations contain an effective temperature <span>(T_{text {eff}})</span>, which crucially depends on the interplay between quantum and thermal fluctuations in contrast to the classical Fokker-Planck equation. In the regime of high temperatures, one recovers the classical Fokker-Planck equation. As an application of our result, we also provide the stationary solution of the semiclassical Fokker-Planck equations for a superconducting Josephson circuit and for a Bose Josephson junction, which are experimentally accessible.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00087-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135014724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CDF W mass anomaly revisited CDF W 质量异常再研究
AAPPS Bulletin Pub Date : 2023-09-13 DOI: 10.1007/s43673-023-00090-7
Shou-hua Zhu
{"title":"CDF W mass anomaly revisited","authors":"Shou-hua Zhu","doi":"10.1007/s43673-023-00090-7","DOIUrl":"10.1007/s43673-023-00090-7","url":null,"abstract":"<div><p>The CDF, ATLAS, and LHCb have released the measurements on the W boson mass <span>(m_W)</span> at <span>(sqrt{S}=1.96, 7, 13 TeV)</span>, respectively. The measured values show the declining tendency, namely <span>(m_W)</span> decreases with the increment of the collider energy. If the declining tendency is confirmed, it might be the signal of metric field at high-energy colliders. In this paper, we propose a model to account for such tendency and explore the properties of the model.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00090-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135741106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
News and Views (7&8) 新闻与观点 (7&8)
AAPPS Bulletin Pub Date : 2023-08-31 DOI: 10.1007/s43673-023-00088-1
AAPPS Bulletin
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引用次数: 0
The (Well nu)-vertex corrections to W-boson mass in the R-parity violating MSSM R-奇偶性违反MSSM中W-玻色子质量的（Well）-顶点修正
AAPPS Bulletin Pub Date : 2023-07-31 DOI: 10.1007/s43673-023-00086-3
Min-Di Zheng, Feng-Zhi Chen, Hong-Hao Zhang
{"title":"The (Well nu)-vertex corrections to W-boson mass in the R-parity violating MSSM","authors":"Min-Di Zheng,&nbsp;Feng-Zhi Chen,&nbsp;Hong-Hao Zhang","doi":"10.1007/s43673-023-00086-3","DOIUrl":"10.1007/s43673-023-00086-3","url":null,"abstract":"<div><p>Inspired by the astonishing <span>(7sigma)</span> discrepancy between the recent CDF-II measurement and the standard model prediction on the mass of <i>W</i>-boson, we investigate the <span>(lambda ')</span>-corrections to the vertex of <span>(mu rightarrow nu _mu ebar{nu _e})</span> decay in the context of the <i>R</i>-parity violating minimal supersymmetric standard model. These corrections can raise the <i>W</i>-boson mass independently. Combined with recent <i>Z</i>-pole and kaon decay measurements, <span>(m_W lesssim 80.37)</span> GeV can be reached. We find that these vertex corrections cannot explain the CDF result entirely at the <span>(2sigma)</span> and even <span>(3sigma)</span> levels. However, these corrections together with the oblique contributions can be accordant with the CDF-II result and relevant bounds at the <span>(3sigma)</span> level.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00086-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89032741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pion PDFs confronted by fixed-target charmonium production 固定目标粲生产所面临的粒子 PDF
AAPPS Bulletin Pub Date : 2023-07-05 DOI: 10.1007/s43673-023-00085-4
Wen-Chen Chang, Chia-Yu Hsieh, Yu-Shiang Lian, Jen-Chieh Peng, Stephane Platchkov, Takahiro Sawada
{"title":"Pion PDFs confronted by fixed-target charmonium production","authors":"Wen-Chen Chang,&nbsp;Chia-Yu Hsieh,&nbsp;Yu-Shiang Lian,&nbsp;Jen-Chieh Peng,&nbsp;Stephane Platchkov,&nbsp;Takahiro Sawada","doi":"10.1007/s43673-023-00085-4","DOIUrl":"10.1007/s43673-023-00085-4","url":null,"abstract":"<div><p>The pion, as the Goldstone boson of the strong interaction, is the lightest QCD bound state and responsible for the long-range nucleon-nucleon interaction inside the nucleus. Our knowledge on the pion partonic structure is limited by the existing Drell-Yan data which are primarily sensitive to the pion valence-quark distributions. The recent progress of global analysis of pion’s parton distribution functions (PDFs) utilizing various experimental approaches are introduced. From comparisons between the pion-induced <span>(J/psi)</span> and <span>(psi (2S))</span> production data with theoretical calculations using the CEM and NRQCD models, we show how these charmonium production data could provide useful constraints on the pion PDFs.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00085-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79318903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chip-based photonic graph states 基于芯片的光子图态
AAPPS Bulletin Pub Date : 2023-06-30 DOI: 10.1007/s43673-023-00082-7
Jieshan Huang, Xiaojiong Chen, Xudong Li, Jianwei Wang
{"title":"Chip-based photonic graph states","authors":"Jieshan Huang,&nbsp;Xiaojiong Chen,&nbsp;Xudong Li,&nbsp;Jianwei Wang","doi":"10.1007/s43673-023-00082-7","DOIUrl":"10.1007/s43673-023-00082-7","url":null,"abstract":"<div><p>Graph states are one of the most significant classes of entangled states, serving as the quantum resources for quantum technologies. Recently, integrated quantum photonics is becoming a promising platform for quantum information processing, enabling the generation, manipulation, and measurement of photonic quantum states. This article summarizes state-of-the-art experimental progress and advances in the chip-based photonic graph states.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00082-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90205852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
News and Views (5&6) 新闻与观点 (5&6)
AAPPS Bulletin Pub Date : 2023-05-22 DOI: 10.1007/s43673-023-00084-5
AAPPS Bulletin
{"title":"News and Views (5&6)","authors":"AAPPS Bulletin","doi":"10.1007/s43673-023-00084-5","DOIUrl":"10.1007/s43673-023-00084-5","url":null,"abstract":"","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00084-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74577765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-dimensional coherent spectroscopy of trion-polaritons and exciton-polaritons in atomically thin transition metal dichalcogenides 原子薄过渡金属二掺杂化物中三离子-极坐标子和激子-极坐标子的二维相干光谱学
AAPPS Bulletin Pub Date : 2023-05-17 DOI: 10.1007/s43673-023-00081-8
Hui Hu, Jia Wang, Riley Lalor, Xia-Ji Liu
{"title":"Two-dimensional coherent spectroscopy of trion-polaritons and exciton-polaritons in atomically thin transition metal dichalcogenides","authors":"Hui Hu,&nbsp;Jia Wang,&nbsp;Riley Lalor,&nbsp;Xia-Ji Liu","doi":"10.1007/s43673-023-00081-8","DOIUrl":"10.1007/s43673-023-00081-8","url":null,"abstract":"<div><p>We present a microscopic many-body calculation of the nonlinear two-dimensional coherent spectroscopy (2DCS) of trion-polaritons and exciton-polaritons in charge-tunable transition-metal-dichalcogenides monolayers placed in an optical microcavity. The charge tunability leads to an electron gas with nonzero density that brings brightness to the trion — a polaron quasiparticle formed by an exciton with a nonzero residue bounded to the electron gas. As a result, a trion-polariton is created under strong light-matter coupling, as observed in the recent experiment by Sidler et al. [Nat. Phys. 13, 255 (2017)]. We analyze in detail the structure of trion-polaritons, by solving an extended Chevy ansatz for the trion quasiparticle wave-function. We confirm that the effective light-matter coupling for trion-polaritons is determined by the residue of the trion quasiparticle. The solution of the full many-body polaron states within Chevy ansatz enables us to microscopically calculate the nonlinear 2DCS spectrum of both trion-polaritons and exciton-polaritons. We predict the existence of three kinds of off-diagonal cross-peaks in the 2DCS spectrum, as an indication of the coherence among the different branches of trion-polaritons and exciton-polaritons. Due to the sensitivity of 2DCS spectrum to quasiparticle interactions, our work provides a good starting point to explore the strong nonlinearity exhibited by trion-polaritons in some recent exciton-polariton experiments.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00081-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75047864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: News and Views (3&4) 更正：新闻与观点 (3&4)
AAPPS Bulletin Pub Date : 2023-05-09 DOI: 10.1007/s43673-023-00083-6
AAPPS Bulletin
{"title":"Correction: News and Views (3&4)","authors":"AAPPS Bulletin","doi":"10.1007/s43673-023-00083-6","DOIUrl":"10.1007/s43673-023-00083-6","url":null,"abstract":"","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-023-00083-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87661933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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