The European Physical Journal H最新文献

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Feynman 1947 letter on path integral for the Dirac equation
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2025-03-25 DOI: 10.1140/epjh/s13129-025-00090-1
Ted Jacobson
{"title":"Feynman 1947 letter on path integral for the Dirac equation","authors":"Ted Jacobson","doi":"10.1140/epjh/s13129-025-00090-1","DOIUrl":"10.1140/epjh/s13129-025-00090-1","url":null,"abstract":"<div><p>In 1947, four months before the famous Shelter Island conference, Richard Feynman wrote a lengthy letter to his former MIT classmate Theodore Welton, reporting on his efforts to develop a path integral describing the propagation of a Dirac particle. While these efforts never came to fruition, and were shortly abandoned in favor of a very different method of dealing with the electron propagator appearing in in QED, the letter is interesting both from the historical viewpoint of revealing what Feynman was thinking about during that period just before the development of QED, and for its scientific ideas. It also contains at the end some philosophical remarks, which Feynman wraps up with the comment, “Well enough for the baloney.” In this article I present a transcription of the letter along with editorial notes, and a facsimile of the original handwritten document. I also briefly comment on Feynman’s efforts and discuss their relation to some later work.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"50 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698536","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
A confederacy of anomalies
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2025-03-25 DOI: 10.1140/epjh/s13129-025-00092-z
Jan Smit
{"title":"A confederacy of anomalies","authors":"Jan Smit","doi":"10.1140/epjh/s13129-025-00092-z","DOIUrl":"10.1140/epjh/s13129-025-00092-z","url":null,"abstract":"<div><p>A personal recollection of early years in lattice gauge theory with a bias toward chiral symmetry and lattice fermions.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"50 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjh/s13129-025-00092-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Correction: Lattice Gauge theory before lattice Gauge theory
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2025-03-20 DOI: 10.1140/epjh/s13129-025-00094-x
J. B. Kogut
{"title":"Correction: Lattice Gauge theory before lattice Gauge theory","authors":"J. B. Kogut","doi":"10.1140/epjh/s13129-025-00094-x","DOIUrl":"10.1140/epjh/s13129-025-00094-x","url":null,"abstract":"","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"50 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjh/s13129-025-00094-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 ignored Berezin’s solution of the Ising model
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2025-02-26 DOI: 10.1140/epjh/s13129-025-00093-y
M. Ostilli
{"title":"The ignored Berezin’s solution of the Ising model","authors":"M. Ostilli","doi":"10.1140/epjh/s13129-025-00093-y","DOIUrl":"10.1140/epjh/s13129-025-00093-y","url":null,"abstract":"<div><p>In 1969, the Russian Mathematical Survey published a paper by Felix A. Berezin called “THE PLANE ISING MODEL” (Berezin in Russ Math Surv 24:1, 1969) where Onsager’s solution of the two-dimensional Ising model is found by means of integrals over anticommuting variables (Grassmann variables). Berezin’s work provides a very elegant method for solving the Ising model which turns out to be much simpler if compared to previous methods. Berezin’s work represents also the very first use of anticommuting variables for solving actual combinatorial problems. Western literature, however, has ignored Ref. Berezin (Russ Math Surv 24:1, 1969). In fact, more than a decade after Berezin’s paper, S. Samuel re-found, independently, essentially the same solution obtained by Berezin, but with no reference to his work. S. Samuel solved also other planar models and paved the way to a subsequent proliferation of papers both related to statistical mechanics and fermionic field theories. Yet, we have verified that, until now, western literature still does not cite the original work of Berezin on the Ising model. The aim of this perspective paper is to fix this chronic issue and contextualize it within the unfortunate biographical and historical facts around Berezin’s life.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"50 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496967","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
Predictions of critical radii for reactors and bombs 1939–45 including the Frisch–Peierls memorandum 对1939 - 1945年反应堆和炸弹临界半径的预测,包括弗里施-佩尔斯备忘录
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2025-01-13 DOI: 10.1140/epjh/s13129-024-00088-1
Joseph L. McCauley
{"title":"Predictions of critical radii for reactors and bombs 1939–45 including the Frisch–Peierls memorandum","authors":"Joseph L. McCauley","doi":"10.1140/epjh/s13129-024-00088-1","DOIUrl":"10.1140/epjh/s13129-024-00088-1","url":null,"abstract":"<div><p>There were at least seven attempts to calculate critical radii for reactors or bombs 1939–1945. Those made by Flügge and Peierls in 1939 are compared with the calculations made by Perrin (1939), Heisenberg (1939 and 1945) and Serber (1943). Fermi’s 1942 reactor calculations are not covered here because that would call for a separate paper. Heisenberg calculated the critical radius formula and some critical radii in 1939 for a reactor. He focused on reactors 1939–45 and apparently did not make a bomb calculation before his August 1945 Farm Hall Lecture where he independently reproduced the 1943 Los Alamos Primer calculation for a bomb to within the limits that he knew the fast fission cross section. Flügge attempted a ponderous alternative to a critical radius calculation. Perrin’s calculation predates the Heisenberg and Serber calculations. His theoretical choice of tamper boundary condition was not optimal but his calculation method was correct. Peierls aimed to improve on Perrin's method but did worse. Finally, we calculate the 2.1 cm critical radius stated in the Frisch–Peierls Memorandum from Peierls’ model and graph, and we also show how Frisch and Peierls likely calculated it, including why Frisch assumed a fission cross section of 10 barn in his calculation.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"50 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976386","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
Lattice Gauge theory before lattice Gauge theory 格规理论之前的格规理论
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2024-12-28 DOI: 10.1140/epjh/s13129-024-00089-0
J. B. Kogut
{"title":"Lattice Gauge theory before lattice Gauge theory","authors":"J. B. Kogut","doi":"10.1140/epjh/s13129-024-00089-0","DOIUrl":"10.1140/epjh/s13129-024-00089-0","url":null,"abstract":"<div><p>How was Lattice Gauge Theory born? What was it like in the “early days” of the 1970s and 80s before lattice field theory became a substantial subfield of high energy theory? How did high energy physics and condensed matter theory get together? What were the big physics problems and technical challenges of the day? This short talk looks at these topics from one person’s personal recollections, experiences and perspective.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"49 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889868","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
Raoul Gatto and Bruno Touschek’s joint legacy in the rise of electron–positron physics 拉乌尔·加托和布鲁诺·图谢克对电子-正电子物理学兴起的共同贡献
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2024-12-20 DOI: 10.1140/epjh/s13129-024-00086-3
Luisa Bonolis, Franco Buccella, Giulia Pancheri
{"title":"Raoul Gatto and Bruno Touschek’s joint legacy in the rise of electron–positron physics","authors":"Luisa Bonolis,&nbsp;Franco Buccella,&nbsp;Giulia Pancheri","doi":"10.1140/epjh/s13129-024-00086-3","DOIUrl":"10.1140/epjh/s13129-024-00086-3","url":null,"abstract":"<div><p>Raoul Gatto and Bruno Touschek’s collaboration in the establishment of electron–positron colliders as a fundamental discovery tool in particle physics will be illustrated. In particular, we will tell the little-known story of how Gatto and Touschek’s pioneering visions combined to provide the theoretical foundation for AdA, the first matter–antimatter collider, and how their friendship with Wolfgang Pauli and Gerhard Lüders was crucial to their understanding of the CPT theorem, the basis for AdA’s success. We will see how these two exceptional scientists shaped physics between Rome and Frascati, from the proposal to build AdA and soon after the larger machine ADONE in 1961, to the discovery of the <span>(J/Psi )</span> particle in 1974. We will also highlight Gatto and Touschek’s contribution in mentoring an extraordinary cohort of students and collaborators whose work contributed to the renaissance of Italian theoretical physics after the Second World War and to the establishment of the Standard Model of particle physics.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"49 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjh/s13129-024-00086-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Obituary—Prof. Wolf Beiglböck (1939–2024): Reminiscences on the architect of the European Physical Journal and Founding Editor of EPJ H Obituary-Prof。沃尔夫Beiglböck(1939-2024):《欧洲物理杂志》的建筑师和EPJ H的创始编辑的回忆
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2024-12-09 DOI: 10.1140/epjh/s13129-024-00087-2
Christian Caron, Sabine Lehr
{"title":"Obituary—Prof. Wolf Beiglböck (1939–2024): Reminiscences on the architect of the European Physical Journal and Founding Editor of EPJ H","authors":"Christian Caron,&nbsp;Sabine Lehr","doi":"10.1140/epjh/s13129-024-00087-2","DOIUrl":"10.1140/epjh/s13129-024-00087-2","url":null,"abstract":"","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"49 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798236","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
Equilibria and the protomodel of the Sun’s atmosphere by Karl Schwarzschild in hindsight 卡尔-施瓦兹柴尔德的平衡和太阳大气原模型的后见之明
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2024-10-16 DOI: 10.1140/epjh/s13129-024-00083-6
Július Koza
{"title":"Equilibria and the protomodel of the Sun’s atmosphere by Karl Schwarzschild in hindsight","authors":"Július Koza","doi":"10.1140/epjh/s13129-024-00083-6","DOIUrl":"10.1140/epjh/s13129-024-00083-6","url":null,"abstract":"<div><p>The concepts of radiative and adiabatic equilibria, introduced by Karl Schwarzschild in his seminal paper <i>Ueber das Gleichgewicht der Sonnenatmosphäre</i> published in January 1906, are the founding blocks of the theory of radiative transfer, stellar structure, and solar physics. Careful reading of the paper and its later English translation reveals small formal inaccuracies and ambiguities but with no consequences whatsoever for the final outcomes and conclusions. This paper offers their adjustments with respective derivations using contemporary formalism and sets Schwarzschild’s paper in context with a historical and modern perspective. Particular attention is paid to Schwarzschild’s largely forgotten limb-darkening formula for adiabatic equilibrium. The paper also reproduces Schwarzschild’s radiative equilibrium protomodel of the Sun’s atmosphere in graphical form and compares it with modern models presented in some of the most cited papers in stellar and solar physics.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"49 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjh/s13129-024-00083-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
A commented translation of Boltzmann’s work, “Ueber die sogenannte H-Curve.” 玻尔兹曼著作 "Ueber die sogenannte H-Curve" 的注释译文。
IF 0.8 4区 物理与天体物理
The European Physical Journal H Pub Date : 2024-09-23 DOI: 10.1140/epjh/s13129-024-00085-4
Jae Wan Shim
{"title":"A commented translation of Boltzmann’s work, “Ueber die sogenannte H-Curve.”","authors":"Jae Wan Shim","doi":"10.1140/epjh/s13129-024-00085-4","DOIUrl":"10.1140/epjh/s13129-024-00085-4","url":null,"abstract":"<div><p>Boltzmann’s work, “Ueber die sogenannte <i>H</i>-Curve,” discusses his demonstration of the essential characteristics of the <i>H</i>-curve in a clear, concise, and precise style, showcasing his efforts to persuade his peers. To make these findings more widely accessible, the author aims to provide a translated version of the original article, while also correcting some typographical errors in the mathematical expressions with explanatory footnotes. The final section offers concluding remarks with graphs and relevant references for interested readers.</p></div>","PeriodicalId":791,"journal":{"name":"The European Physical Journal H","volume":"49 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413347","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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