The European Physical Journal A最新文献

Refining Big Bang Nucleosynthesis abundances via the Trojan Horse method

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-10 DOI: 10.1140/epja/s10050-025-01546-0

Roberta Spartà, Rosario Gianluca Pizzone, Livio Lamia, Alessandro Alberto Oliva, Marco La Cognata, Alessia Di Pietro, Pierpaolo Figuera, Giovanni Luca Guardo, Marco La Commara, Dario Lattuada, Marco Mazzocco, Sara Palmerini, Giuseppe Gabriele Rapisarda, Stefano Romano, Maria Letizia Sergi, Aurora Tumino

引用次数: 0

Publisher Erratum: Plasma-delay studies on heavy ion detection using PIPS at the LOHENGRIN recoil separator

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-10 DOI: 10.1140/epja/s10050-025-01547-z

Ana M. Gómez L., Ali Al-Adili, Diego Tarrío, Andreas Solders, Zhihao Gao, Alf Göök, Stephan Pomp, André Poussette, Samuel Bennett, Yung Hee Kim, Ulli Köster, Andreas Oberstedt, Gavin Smith, Nikolay V. Sosnin, Stephan Oberstedt

引用次数: 0

(gamma )-ray angular correlations, distributions and linear polarization in tracking arrays

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-10 DOI: 10.1140/epja/s10050-025-01533-5

T. Lauritsen, A. Korichi, C. M. Campbell, M. P. Carpenter, P. A. Copp, J. P. Greene, R. V. F. Janssens, T. L. Khoo, F. G. Kondev, C. Müller-Gatermann, S. Nandi, W. Reviol, G. Savard, M. Siciliano, D. Seweryniak, S. Zhu

引用次数: 0

Quantum computing using photons

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-09 DOI: 10.1140/epja/s10050-025-01517-5

Christophe Couteau

{"title":"Quantum computing using photons","authors":"Christophe Couteau","doi":"10.1140/epja/s10050-025-01517-5","DOIUrl":"10.1140/epja/s10050-025-01517-5","url":null,"abstract":"<div>Photons as quantum bits have been amongst the first physical systems to be used for experimentally demonstrating some of the basic concepts in quantum computing starting from entanglement, to teleportation, to the realisation of a two-qubit CNOT gate and more recently for demonstrating quantum advantage using light. Photons can thus be used as qubits and are a potential platform for a future quantum computer. It is hard to predict which platform will win the race, perhaps none of them will surpass the others. What is for sure is that light can not be ignored altogether as this is the building block for communications and for propagating information in general, and thus for quantum information, in particular over long distances through optical fibres or via satellites. We will first develop what are the different ways of encoding qubits with photons and why photons are interesting systems with a great potential. We will then review some of the pioneering works up to what has been achieved more recently and we will conclude by what perspectives one can hope for using photonic qubits. Implicitly, in this work, we take the stand-point of a future fault-tolerant quantum computer using photons. In this review, some of the experimental technologies will be mentioned and briefly described but the reader will refer to further readings for more information onto how to produce, control and detect photonic qubits. It is also worth stating that this review has to be seen more as a first introduction to the subject.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143809189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Nuclear structure and reaction studies with digital INGA

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-07 DOI: 10.1140/epja/s10050-025-01520-w

Rudrajyoti Palit, Piku Dey, Ananya Kundu

引用次数: 0

On the influence of nuclear deformation in the elastic scattering of polarized electrons 论极化电子弹性散射中核变形的影响

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-07 DOI: 10.1140/epja/s10050-025-01493-w

D. H. Jakubassa-Amundsen

引用次数: 0

Scale-(in)dependence in quantum 4-body scattering

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-05 DOI: 10.1140/epja/s10050-025-01538-0

Sourav Mondal, Rakshanda Goswami, Udit Raha, Johannes Kirscher

{"title":"Scale-(in)dependence in quantum 4-body scattering","authors":"Sourav Mondal, Rakshanda Goswami, Udit Raha, Johannes Kirscher","doi":"10.1140/epja/s10050-025-01538-0","DOIUrl":"10.1140/epja/s10050-025-01538-0","url":null,"abstract":"<div>We investigate the multi-channel 4-body scattering system using regularized 2- and 3-body contact interactions. The analysis determines the sensitivity of bound-state energies, scattering phase shifts and cross-sections on the cutoff parameter ((lambda )), and on the energy gaps between scattering thresholds. The latter dependency is obtained with a 2-body scale fixed to an unnaturally large value and a floating 3-body parameter. Specifically, we calculate the binding energies of the shallow 3- and 4-body states, dimer-dimer and trimer-atom scattering lengths, and the trimer-atom to dimer-dimer reaction rates. Employing a potential renormalized by a large 2-body scattering length and a 3-body scale, we find all calculated observables to remain practically constant over the range (6,text {fm}^{-2}<lambda <10,text {fm}^{-2}). Divergences in scattering lengths emerge for critical 3-body parameters at which thresholds are degenerate. For those critical points where the dimer-dimer and trimer-atom thresholds overlap, we predict an enhancement of the inelastic over the elastic scattering event. Such an inversion between elastic- and rearrangement-collision probabilities indicates a strong sensitivity of the 4-body reaction dynamics on the 3-body parameter at finite 2-body scale. As this enhancement is found here for all considered cutoffs but not in earlier studies which employ different renormalization schemes, we conclude that the sole cutoff variation does not necessarily imply non-perturbative changes in reaction rates. We conjecture the enhancement to follow from specific combinations of the finite 2-body range and the 3-body parameter.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Scintillating glass for precision calorimetry in nuclear physics

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-05 DOI: 10.1140/epja/s10050-025-01540-6

Tanja Horn, Vladimir Berdnikov, Marco Battaglieri, Mariangela Bondi, Ivan Cali, Joshua Crafts, Alexandre Demarque, Yeran Ghandilyan, Stefano Grazzi, Arthur Mkrtchyan, Hamlet Mkrtchyan, Casey Morean, Mehran Mostafavi, Carlos Muñoz Camacho, Noémie Pilleux, Avnish Singh, Alexander Somov, Marco Spreafico, Petr Stepanov, Vardan Tadevosyan, Simone Vallarino, Yuwei Zhu

{"title":"Scintillating glass for precision calorimetry in nuclear physics","authors":"Tanja Horn, Vladimir Berdnikov, Marco Battaglieri, Mariangela Bondi, Ivan Cali, Joshua Crafts, Alexandre Demarque, Yeran Ghandilyan, Stefano Grazzi, Arthur Mkrtchyan, Hamlet Mkrtchyan, Casey Morean, Mehran Mostafavi, Carlos Muñoz Camacho, Noémie Pilleux, Avnish Singh, Alexander Somov, Marco Spreafico, Petr Stepanov, Vardan Tadevosyan, Simone Vallarino, Yuwei Zhu","doi":"10.1140/epja/s10050-025-01540-6","DOIUrl":"10.1140/epja/s10050-025-01540-6","url":null,"abstract":"<div>High-performance scintillator materials are needed for particle identification and measurements of energy and momentum of electromagnetic particles in modern nuclear physics experiments. As an example, the US Electron-Ion Collider, a unique collider with diverse physics topics, requires electromagnetic calorimetry enabling high-quality electron identification and detection in the momentum range of 0.3 to tens of GeV. The highest resolution in electromagnetic calorimeters can be provided by homogeneous materials, e.g., lead tungstate crystals. Inorganic glass scintillators have been investigated as an attractive and cost-effective alternative to crystals, that is also easier and faster to manufacture in mass production. In this paper, we discuss progress in the fabrication and characterization of recent scintillating glass samples on both test bench and beam tests. The results are well-reproduced by simulation and are discussed in the context of the Electron-Ion Collider experimental requirements and bench-marked against lead tungstate crystals.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The (^{12})C((alpha ,gamma )^{16})O reaction, in the laboratory and in the stars

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-01 DOI: 10.1140/epja/s10050-025-01537-1

R. J. de Boer, A. Best, C. R. Brune, A. Chieffi, C. Hebborn, G. Imbriani, W. P. Liu, Y. P. Shen, F. X. Timmes, M. Wiescher

{"title":"The (^{12})C((alpha ,gamma )^{16})O reaction, in the laboratory and in the stars","authors":"R. J. de Boer, A. Best, C. R. Brune, A. Chieffi, C. Hebborn, G. Imbriani, W. P. Liu, Y. P. Shen, F. X. Timmes, M. Wiescher","doi":"10.1140/epja/s10050-025-01537-1","DOIUrl":"10.1140/epja/s10050-025-01537-1","url":null,"abstract":"<div>The evolutionary path of massive stars begins at helium burning. Energy production for this phase of stellar evolution is dominated by the reaction path 3(alpha rightarrow ^{12}) C((alpha ,gamma )^{16})O and also determines the ratio of (^{12})C/(^{16})O in the stellar core. This ratio then sets the evolutionary trajectory as the star evolves towards a white dwarf, neutron star or black hole. Although the reaction rate of the 3(alpha ) process is relatively well known, since it proceeds mainly through a single narrow resonance in (^{12})C, that of the (^{12})C((alpha ,gamma )^{16})O reaction remains uncertain since it is the result of a more difficult to pin down, slowly-varying, portion of the cross section over a strong interference region between the high-energy tails of subthreshold resonances, the low-energy tails of higher-energy broad resonances and direct capture. Experimental measurements of this cross section require herculean efforts, since even at higher energies the cross section remains small and large background sources are often present that require the use of very sensitive experimental methods. Since the (^{12})C((alpha ,gamma )^{16})O reaction has such a strong influence on many different stellar objects, it is also interesting to try to back calculate the required rate needed to match astrophysical observations. This has become increasingly tempting, as the accuracy and precision of observational data has been steadily improving. Yet, the pitfall to this approach lies in the intermediary steps of modeling, where other uncertainties needed to model a star’s internal behavior remain highly uncertain.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01537-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The soft dipole resonances and E1 responses of 6He and 6Be

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-01 DOI: 10.1140/epja/s10050-025-01543-3

Y. H. Yang, Y. G. Ma, Z. C. Xu, S. M. Wang

{"title":"The soft dipole resonances and E1 responses of 6He and 6Be","authors":"Y. H. Yang, Y. G. Ma, Z. C. Xu, S. M. Wang","doi":"10.1140/epja/s10050-025-01543-3","DOIUrl":"10.1140/epja/s10050-025-01543-3","url":null,"abstract":"<div>6He, known as a Borromean nucleus with a 2n-halo structure, and its mirror partner 6Be, the lightest 2p emitter, provide an excellent framework for exploring soft dipole resonance and nuclear structure. Despite previous studies on these nuclei, the potential presence of soft dipole resonance ((J^pi = 1^-)) had rarely been predicted before. In this work, we will investigate the presence of (1^-) resonance states in the complex energy plane, focusing on how the soft dipole resonance impacts the E1 transitions/response. Using the Gamow coupled-channel method for three-body calculations, we analyze the structures and soft dipole resonance of 6He and 6Be mirror systems, further exploring the E1 transition strengths of 6He through Green’s function method. The results show that the structural properties of 6He and 6Be show similar behavior. Notably, there are significant di-nucleon correlations in the (0^+) ground-state of both nuclei. Additionally, we observed a significant enhancement in E1 transition strengths at the energy corresponding to the (1^-) state. This indicates the presence of relative motion between the valence nucleons and the core.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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