arXiv - PHYS - Atomic Physics最新文献_第4页

(Un)physical consequences of "Quantum Measurements of Time" (量子时间测量 "的（非）物理后果

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-30 DOI: arxiv-2409.00161

Will Cavendish, Siddhant Das, Markus Nöth, Ali Ayatollah Rafsanjani

引用次数: 0

Smallness of the nuclear polarization effect in the hyperfine structure of heavy muonic atoms as a stimulus for next-generation experiments 重介子原子超精细结构中核极化效应的微小性对下一代实验的启示

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-29 DOI: arxiv-2408.16516

J. Vandeleur, G. Sanamyan, O. R. Smits, I. A. Valuev, N. S. Oreshkina, J. S. M. Ginges

{"title":"Smallness of the nuclear polarization effect in the hyperfine structure of heavy muonic atoms as a stimulus for next-generation experiments","authors":"J. Vandeleur, G. Sanamyan, O. R. Smits, I. A. Valuev, N. S. Oreshkina, J. S. M. Ginges","doi":"arxiv-2408.16516","DOIUrl":"https://doi.org/arxiv-2408.16516","url":null,"abstract":"There is renewed interest in studies of muonic atoms, which may provide\u0000detailed information on nuclear structure. A major limiting factor in the\u0000interpretation of measurements is the nuclear polarization contribution. We\u0000propose a method to determine this contribution to the hyperfine structure in\u0000muonic atoms from a combination of theory and experiment for hydrogenlike ions\u0000and muonic atoms. Applying the method to $^{203,205}$Tl and $^{209}$Bi, for\u0000which there are H-like ion and muonic atom hyperfine experimental data, we find\u0000that the nuclear polarization contribution for these systems is small, and\u0000place a limit on its size of less than $10%$ the total hyperfine splitting. We\u0000have also performed direct calculations of the nuclear polarization\u0000contribution using a semi-analytical model, which indicate that it may be as\u0000much as two orders of magnitude smaller. Therefore, we conclude that the\u0000nuclear polarization correction to the hyperfine structure of muonic atoms does\u0000not represent a limiting factor for next-generation experiments.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176391","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

Polarizability of the kaonic helium atom 高子氦原子的极化性

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-29 DOI: arxiv-2408.16360

D. T. Aznabayev, A. K. Bekbaev, V. I. Korobov

引用次数: 0

Revisiting collisional broadening of $^{85}$Rb Rydberg levels: conclusions for vapor cell manufacture 重新审视 $^{85}$Rb Rydberg 水平的碰撞展宽：汽化电池制造的结论

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-29 DOI: arxiv-2408.16669

Mingxin Lei, Stephen P. Eckel, Eric B. Norrgard, Nikunjkumar Prajapati, Alexandra B. Artusio-Glimpse, Matthew T. Simons, Christopher L. Holloway

{"title":"Revisiting collisional broadening of $^{85}$Rb Rydberg levels: conclusions for vapor cell manufacture","authors":"Mingxin Lei, Stephen P. Eckel, Eric B. Norrgard, Nikunjkumar Prajapati, Alexandra B. Artusio-Glimpse, Matthew T. Simons, Christopher L. Holloway","doi":"arxiv-2408.16669","DOIUrl":"https://doi.org/arxiv-2408.16669","url":null,"abstract":"Electrometry based on electromagnetically induced transparency (EIT) in\u0000alkali Rydberg vapor cells may suffer reduced sensitivity due to spurious line\u0000broadening effects, caused by surface charges, contaminant gases, or other\u0000manufacturing defects. In order to draw conclusions about the deleterious\u0000effects of potential contaminant gases inside Rydberg electrometry vapor cells,\u0000we revisit collisional broadening and shifts of both the D$_2$ line and Rydberg\u0000levels of rubidium. Specifically, we measure the broadening and shifts of the\u0000$5{rm S}_{1/2}rightarrow 5{rm P}_{3/2}$ (i.e., the D$_2$ line) and $5{rm\u0000S}_{1/2}rightarrow 5{rm P}_{3/2}rightarrow (25{rm D},27{rm S},30{rm\u0000D},32{rm S},35{rm D},37{rm S})$ transitions of $^{85}$Rb due to He, Ne,\u0000N$_2$ and Ar. By combining these measurements with observations of velocity\u0000changing collisions in the sub-Doppler spectrum of the D$_2$ line, we conclude\u0000the following: (1) that contaminant gases are most likely not the cause of\u0000irregular line shapes or shifts of Rydberg transitions due to the high\u0000pressures required, and (2) the sub-Doppler spectrum of the D$_2$ line, through\u0000its accompanying loss of contrast at high pressures, can validate that a vapor\u0000cell is sufficiently free of contaminant gas for EIT electrometry. We use the\u0000theory of Omont, J. Phys. France 38, 1343 (1977), to extend our results to a\u0000wide variety of possible contaminant gases and further derive scaling laws\u0000applicable to all gases.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176390","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

Anomalous multi-gap topological phases in periodically driven quantum rotors 周期性驱动量子转子中的反常多间隙拓扑相位

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-29 DOI: arxiv-2408.16848

Volker Karle, Mikhail Lemeshko, Adrien Bouhon, Robert-Jan Slager, F. Nur Ünal

{"title":"Anomalous multi-gap topological phases in periodically driven quantum rotors","authors":"Volker Karle, Mikhail Lemeshko, Adrien Bouhon, Robert-Jan Slager, F. Nur Ünal","doi":"arxiv-2408.16848","DOIUrl":"https://doi.org/arxiv-2408.16848","url":null,"abstract":"We demonstrate that periodically driven quantum rotors provide a promising\u0000and broadly applicable platform to implement multi-gap topological phases,\u0000where groups of bands can acquire topological invariants due to non-Abelian\u0000braiding of band degeneracies. By adiabatically varying the periodic kicks to\u0000the rotor we find nodal-line braiding, which causes sign flips of topological\u0000charges of band nodes and can prevent them from annihilating, indicated by\u0000non-zero values of the %non-Abelian patch Euler class. In particular, we report\u0000on the emergence of an anomalous Dirac string phase arising in the strongly\u0000driven regime, a truly out-of-equilibrium phase of the quantum rotor. This\u0000phase emanates from braiding processes involving all (quasienergy) gaps and\u0000manifests itself with edge states at zero angular momentum. Our results reveal\u0000direct applications in state-of-the-art experiments of quantum rotors, such as\u0000linear molecules driven by periodic far-off-resonant laser pulses or artificial\u0000quantum rotors in optical lattices, whose extensive versatility offers precise\u0000modification and observation of novel non-Abelian topological properties.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176393","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

Polaronic neutron in dilute alpha matter: A $p$-wave Bose polaron 稀α物质中的极化中子：p$波玻色极子

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-27 DOI: arxiv-2408.15043

Hiroyuki Tajima, Hajime Moriya, Tomoya Naito, Wataru Horiuchi, Eiji Nakano, Kei Iida

{"title":"Polaronic neutron in dilute alpha matter: A $p$-wave Bose polaron","authors":"Hiroyuki Tajima, Hajime Moriya, Tomoya Naito, Wataru Horiuchi, Eiji Nakano, Kei Iida","doi":"arxiv-2408.15043","DOIUrl":"https://doi.org/arxiv-2408.15043","url":null,"abstract":"We theoretically investigate quasiparticle properties of a neutron immersed\u0000in an alpha condensate, which is one of the possible states of dilute symmetric\u0000nuclear matter. The resonant $p$-wave neutron-alpha scattering, which plays a\u0000crucial role in forming halo nuclei, is considered. This system is similar to a\u0000Bose polaron near the $p$-wave Feshbach resonance that can be realized in\u0000cold-atomic experiments. Calculating the low-momentum self-energy within the\u0000field-theoretical approach, we give an analytical formula for the effective\u0000mass of a polaronic neutron as a function of alpha condensation density. Two\u0000adjacent neutrons in a medium, each of which behaves like a stable polaron\u0000having an enhanced effective mass, can form a bound dineutron, with the help of\u0000$^1S_0$ neutron-neutron attraction. This is in contrast to the case of the\u0000vacuum, where a dineutron is known to be unbound. Moreover, adding an\u0000impurity-like neutron to symmetric nuclear matter can be regarded as a\u0000perturbation accompanied by an explicit breaking of Wigner's $ SU left( 4\u0000right) $ symmetry. The relationship between the polaron energy and the Wigner\u0000term in nuclear mass formulas is discussed in the low-density limit. Our result\u0000would be useful for understanding many-body physics in astrophysical\u0000environments as well as the formation of multi-nucleon clusters in neutron-halo\u0000nuclei.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176394","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

Effect of Rabi dynamics in resonant x-ray scattering of intense attosecond pulses 拉比动力学对强阿秒脉冲共振 X 射线散射的影响

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-26 DOI: arxiv-2408.14650

Akilesh Venkatesh, Phay J. Ho

引用次数: 0

Integral equation approach for a hydrogen atom in a strong magnetic field 强磁场中氢原子的积分方程法

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-25 DOI: arxiv-2408.13897

B. P. Carter, Z. Papp

引用次数: 0

A Reassessment of 5f Occupation in Plutonium 重新评估钚中的 5f 占位

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-25 DOI: arxiv-2408.14517

J. G. Tobin

引用次数: 0

Magnetization oscillations in a periodically driven transverse field Ising chain 周期性驱动横向场伊辛链中的磁化振荡

arXiv - PHYS - Atomic Physics Pub Date : 2024-08-25 DOI: arxiv-2408.13725

Xiao Wang, Masaki Oshikawa, Márton Kormos, Jianda Wu

{"title":"Magnetization oscillations in a periodically driven transverse field Ising chain","authors":"Xiao Wang, Masaki Oshikawa, Márton Kormos, Jianda Wu","doi":"arxiv-2408.13725","DOIUrl":"https://doi.org/arxiv-2408.13725","url":null,"abstract":"We investigate the nonequilibrium dynamics of the magnetization in an Ising\u0000chain subjected to a slowly rotating transverse field. The magnetization\u0000oscillations are found to be explained by the contributions from different\u0000particle excitations in the quantum $E_8$ model. We study the magnetization in\u0000the frequency domain in detail, uncovering a series of singular peaks for the\u0000$z$ (Ising) component. These singular peaks are split into two sets for the\u0000magnetization along $x$ and $y$ directions with frequency shifts set by the\u0000rotational-field frequency. The peaks include both $delta$-function type and\u0000edge-singularity type peaks. The $delta$-function peaks can be attributed to\u0000particle excitations involving an $E_8$ particle with either the vacuum or a\u0000different particle. The edge-singularity peaks are contributed by particle\u0000excitations of two $E_8$ particles with either the vacuum or another particle,\u0000or by particle excitations that contain two sets of two particles with each set\u0000including at least a particle of the same type. We propose a Rydberg qubit\u0000array for possible experimental investigation.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223589","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