AAPPS Bulletin最新文献

{"title":"News and views (7&8)","authors":"AAPPS Bulletin","doi":"10.1007/s43673-025-00165-7","DOIUrl":"10.1007/s43673-025-00165-7","url":null,"abstract":"","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00165-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021613","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}

{"title":"Evolution of energy confinement physics and most probable compact ignition test device in magnetic fusion","authors":"Hyeon K. Park","doi":"10.1007/s43673-025-00163-9","DOIUrl":"10.1007/s43673-025-00163-9","url":null,"abstract":"<div><p>The variation of edge confinement modes such as L-mode, H-mode, QH-mode, and I-mode and transitions between these modes in toroidal devices is attributed to interplay between turbulent inflow plasmas from divertor and outflow plasmas from the edge in magnetic configuration with <i>x</i>-point. A concept of flow impedance is introduced to model edge confinement of plasmas in tokamak and stellarator. The core confinement improvement is largely due to effective core heating profile, and direct ion heating with PNB system is favorable compared to electron heating in generation of sufficient <i>α</i>-power essential for sustaining the ignition state. Validation of transition physics of sustained ignition state from external to internal <i>α</i>-heating is critical for design of the next step magnetic fusion device. The most probable path for a compact ignition test device in magnetic fusion is suggested. The device size and expected performance of a tokamak plasma are projected based on critical review of experimental data of magnetic fusion research accumulated for half a century such as <i>τ</i>_E scaling laws and n_iτ_ET_i data. A tokamak plasma, <i>V</i>_p ~ 240 m³, equipped with direct ion heating system that can yield fusion power of ~ 220 MW (i.e., <i>α</i>-power up to ~ 45 MW) may be sufficient to test ignition state and transition physics. Practical actuators for control of the core and edge confinement which can be developed based on effective core heating and control of inflow plasmas from divertor are suggested.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00163-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934698","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}

{"title":"Towards electron–ion collider project from Asia","authors":"Yuji Goto,&nbsp;Taku Gunji,&nbsp;Yongsun Kim,&nbsp;Chia Ming Kuo","doi":"10.1007/s43673-025-00164-8","DOIUrl":"10.1007/s43673-025-00164-8","url":null,"abstract":"<div><p>The Electron-Ion Collider (EIC) is the world’s first electron + heavy-ion collider, and also performs polarized electron + polarized proton and light ion collisions, that will be constructed at Brookhaven National Laboratory in the USA. It will explore new areas of quantum chromodynamics (QCD) and foster the richness of nuclear and hadron physics. The EIC program will produce many new and very extensive results in nuclear and hadron physics over the next few decades. As an international cooperation project, it is essential for the future development of this field in Asia to focus on taking the lead in this EIC project.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00164-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144929302","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}

{"title":"Non-Hermitian chains with iso-spectral modulation for customized wireless power transfer","authors":"Luyao Wan,&nbsp;Han Zhang,&nbsp;Xian Wu,&nbsp;Yang Xu,&nbsp;Yunhui Li,&nbsp;Yaping Yang,&nbsp;Hong Chen,&nbsp;Zhiwei Guo","doi":"10.1007/s43673-025-00166-6","DOIUrl":"10.1007/s43673-025-00166-6","url":null,"abstract":"<div><p>Magnetic resonance wireless power transfer (WPT) has emerged as a pivotal technology for near-field electromagnetic manipulation, enabling wire-free energy delivery across diverse applications ranging from consumer electronics and implantable medical devices to electric vehicles. While near-field coupling facilitates this paradigm shift, it imposes inherent constraints: the exponential decay of coupling strength fundamentally limits transfer distance to short-to-mid ranges, and complex power delivery pathways—exemplified by robotic arms—necessitate relay coils configured in domino-like arrays. Conventional domino architectures, however, suffer from significant drawbacks including detrimental frequency splitting due to multi-coil near-field coupling, exacerbated system losses under load, and an inherent lack of precise spatial control over energy delivery. To overcome these limitations, we introduce a customized WPT paradigm based on a one-dimensional non-Hermitian chain with engineered iso-spectral modulation. Through precise control of inter-resonator coupling strengths following a parabolic profile, we achieve an equally spaced eigenvalue spectrum. Crucially, frequency-selective excitation enables deterministic and customized energy localization at predetermined sites within the chain. This approach not only provides a novel platform for developing advanced WPT systems, particularly for simultaneous multi-target energy delivery, but also deepens the fundamental understanding of complex energy transfer dynamics governed by tailored coupling and non-Hermitian physics.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00166-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904972","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}

{"title":"Exact theory of the finite-temperature spectral function of Fermi polarons with multiple particle-hole excitations: diagrammatic theory versus Chevy ansatz","authors":"Hui Hu,&nbsp;Jia Wang,&nbsp;Xia-Ji Liu","doi":"10.1007/s43673-025-00162-w","DOIUrl":"10.1007/s43673-025-00162-w","url":null,"abstract":"<div><p>By using both diagrammatic theory and Chevy ansatz approach, we derive an exact set of equations, which determines the spectral function of Fermi polarons with multiple particle-hole excitations at nonzero temperature. In the diagrammatic theory, we find out the complete series of Feynman diagrams for the multi-particle vertex functions, when the unregularized contact interaction strength becomes infinitesimal, a typical situation occurring in two- or three-dimensional free space. The latter Chevy ansatz approach is more widely applicable, allowing a nonzero interaction strength. We clarify the equivalence of the two approaches for an infinitesimal interaction strength and show that the variational coefficients in the Chevy ansatz are precisely the on-shell multi-particle vertex functions divided by an excitation energy. Truncated to a particular order of particle-hole excitations, the set of equations can be used to approximately calculate the finite-temperature polaron spectral function, once the numerical singularities in the equations are appropriately treated. As a concrete example, we calculate the finite-temperature spectral function of Fermi polarons in one-dimensional lattices, taking into account all the two-particle-hole excitations. We show that the inclusion of two-particle-hole excitations quantitatively improve the predictions on the polaron spectral function. Our results provide a useful way to solve the challenge problem of accurately predicting the finite-temperature spectral function of Fermi polarons in three-dimensional free space. In addition, our clarification of the complete set of Feynman diagrams for the multi-particle polaron vertex functions may inspire the development of more accurate diagrammatic theories of population-imbalanced strongly interacting Fermi gases, beyond the conventional many-body <i>T</i>-matrix approximation.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00162-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171036","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}

{"title":"Orthogonal-state-based measurement device independent quantum communication: a noise-resilient approach","authors":"Chitra Shukla,&nbsp;Abhishek Shukla,&nbsp;Symeon Chatzinotas,&nbsp;Milos Nesladek","doi":"10.1007/s43673-025-00161-x","DOIUrl":"10.1007/s43673-025-00161-x","url":null,"abstract":"<div><p>We attempt to propose the first orthogonal-state-based protocols of measurement-device-independent quantum secure direct communication and quantum dialogue employing single basis, i.e., Bell basis as decoy qubits for eavesdropping detection. Orthogonal-state-based protocols are inherently distinct from conventional conjugate-coding protocols, offering unconditional security derived from the duality and monogamy of entanglement. Noise imposes a major challenge to the efficient implementation of these measurement-device-independent based secure direct quantum communication protocols. Notably, these orthogonal-state-based protocols demonstrate improved performance over conjugate-coding-based protocols under certain noisy environments, highlighting the significance of selecting the best basis choice of decoy qubits for secure quantum communication under collective noise. Further, we rigorously analyze the security of the proposed protocols against various eavesdropping strategies, including intercept-and-resend attack, entangle-and-measure attack, information leakage attack, flip attack, and disturbance or modification attack. Our findings also show that, with appropriate modifications, the proposed orthogonal-state-based measurement-device-independent quantum secure direct communication protocol can be transformed into orthogonal-state-based measurement-device-independent versions of quantum key distribution and quantum key negotiation protocols, expanding their applicability. Our protocols leverage fundamentally distinct resources to close the security loopholes linked to measurement devices, while also effectively doubling the distance for secure direct message transmission compared to traditional quantum secure direct communication protocols. Additionally, we calculate the efficiency of our proposed protocols and compare them with standard versions of measurement-device-independent quantum secure direct communication protocols. Ultimately, we discuss system and operational complexity of our proposed protocols in light of experimental elements and the processes.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00161-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171727","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}

{"title":"Nuclear fission research using NAND facility at IUAC","authors":"Golda Komalan Satheedas,&nbsp;Akhil Jhingan,&nbsp;Sugathan Pullahnhiotan","doi":"10.1007/s43673-025-00160-y","DOIUrl":"10.1007/s43673-025-00160-y","url":null,"abstract":"<div><p>The National Array of Neutron Detectors (NAND) at IUAC is one of the big detector arrays used in experiments to study nuclear fission through the measurement of the neutrons emitted during the process. The array is installed at IUAC heavy ion accelerator facility. NAND consists of 100 liquid scintillators mounted on a semi-spherical geometry covering a total of 3.3<span>(%)</span> of 4<span>(pi)</span> solid angle. The 175-cm-long flight path provides good energy resolution of the emitted neutrons, enabling precise measurement of neutron multiplicity for very heavy nuclei. The fission fragment time-of-flight spectrometer coupled with large array of neutron detectors makes it a versatile tool for exploring the properties of nuclear fission using heavy ions from IUAC accelerators. Over the past two decades, several experiments were performed using NAND facility providing valuable information on traditional fission research extending to new mass region. This article reviews overall details of NAND facility and highlights some important research activities carried out at IUAC. The future research possibilities are also discussed.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00160-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167215","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}

{"title":"Notes on altermagnetism and superconductivity","authors":"Igor I. Mazin","doi":"10.1007/s43673-025-00158-6","DOIUrl":"10.1007/s43673-025-00158-6","url":null,"abstract":"","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00158-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163846","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}

{"title":"Quantum Mpemba effects from symmetry perspectives","authors":"Hui Yu,&nbsp;Shuo Liu,&nbsp;Shi-Xin Zhang","doi":"10.1007/s43673-025-00157-7","DOIUrl":"10.1007/s43673-025-00157-7","url":null,"abstract":"<div><p>Non-equilibrium dynamics have become a central research focus, exemplified by the counterintuitive Mpemba effect where initially hotter systems can cool faster than colder ones. Studied extensively in both classical and quantum regimes, this phenomenon reveals diverse and complex behaviors across different systems. This review provides a concise overview of the quantum Mpemba effect (QME), specifically emphasizing its connection to symmetry breaking and restoration in closed quantum many-body systems. We begin by outlining the classical Mpemba effect and its quantum counterparts, summarizing key findings. Subsequently, we introduce entanglement asymmetry and charge variance as key metrics for probing the QME from symmetry perspectives. Leveraging these tools, we analyze the early- and late-time dynamics of these quantities under Hamiltonian evolution and random unitary circuits. We conclude by discussing significant challenges and promising avenues for future research.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00157-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160929","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}

{"title":"A promising method for strongly correlated electrons in two dimensions: Gutzwiller-guided Density Matrix Renormalization Group","authors":"Hui-Ke Jin,&nbsp;Rong-Yang Sun,&nbsp;Hong-Hao Tu,&nbsp;Yi Zhou","doi":"10.1007/s43673-025-00156-8","DOIUrl":"10.1007/s43673-025-00156-8","url":null,"abstract":"<div><p>The study of strongly correlated electron systems remains a fundamental challenge in condensed matter physics, particularly in two-dimensional (2D) systems hosting various exotic phases of matter including quantum spin liquids, unconventional superconductivity, and topological orders. Although Density Matrix Renormalization Group (DMRG) has established itself as a pillar for simulating one-dimensional quantum systems, its application to 2D systems has long been hindered by the notorious “local minimum” issues. Recent methodological breakthroughs have addressed this challenge by incorporating Gutzwiller-projected wave functions as initial states for DMRG simulations. This hybrid approach, referred to as DMRG guided by Gutzwiller-projected wave functions (or Gutzwiller-guided DMRG), has demonstrated remarkable improvements in accuracy, efficiency, and the ability to explore exotic quantum phases such as topological orders. This review examines the theoretical underpinnings of this approach, details key algorithmic developments, and showcases its applications in recent studies of 2D quantum systems.</p></div>","PeriodicalId":100007,"journal":{"name":"AAPPS Bulletin","volume":"35 1","pages":""},"PeriodicalIF":5.9,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43673-025-00156-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170554","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}