{"title":"The WIMP paradigm: Theme and variations","authors":"Jonathan L. Feng","doi":"10.21468/SciPostPhysLectNotes.71","DOIUrl":"https://doi.org/10.21468/SciPostPhysLectNotes.71","url":null,"abstract":"WIMPs, weakly-interacting massive particles, have been leading candidates for particle dark matter for decades, and they remain a viable and highly motivated possibility. In these lectures, I describe the basic motivations for WIMPs, beginning with the WIMP miracle and its under-appreciated cousin, the discrete WIMP miracle. I then give an overview of some of the basic features of WIMPs and how to find them. These lectures conclude with some variations on the WIMP theme that have by now become significant topics in their own right and illustrate the richness of the WIMP paradigm.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122259398","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}
{"title":"Introduction to the theory of open quantum systems","authors":"Piotr Sza'nkowski","doi":"10.21468/SciPostPhysLectNotes.68","DOIUrl":"https://doi.org/10.21468/SciPostPhysLectNotes.68","url":null,"abstract":"This manuscript is an edited and refined version of the lecture script for a one-semester graduate course given originally at the PhD school in the Institute of Physics of Polish Academy of Sciences in the Spring/Summer semester of 2022. The course expects from the student only a basic knowledge on graduate-level quantum mechanics. The script itself is largely self-contained and could be used as a textbook on the topic of open quantum systems. The program of this course is based on a novel approach to the description of the open system dynamics: It is showed how the environmental degrees of freedom coupled to the system can be represented by a multi-component quasi-stochastic process. Using this representation one constructs the super-quasi-cumulant (or super-qumulant) expansion for the system’s dynamical map-a parametrization that naturally lends itself for the development of a robust and practical perturbation theory. Thus, even an experienced researcher might find this manuscript of some interest.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122072534","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}
{"title":"Parametric couplings in engineered quantum systems","authors":"A. Metelmann","doi":"10.21468/SciPostPhysLectNotes.66","DOIUrl":"https://doi.org/10.21468/SciPostPhysLectNotes.66","url":null,"abstract":"Parametric couplings in engineered quantum systems are a powerful tool to control, manipulate and enhance interactions in a variety of platforms. It allows us to bring systems of different energy scales into communication with each other. This short chapter introduces the basic principles and discusses a few examples of how one can engineer parametric amplifiers with improved characteristics over conventional setups. Clearly, the selected examples are author-biased, and other interesting proposals and implementations can be found in the literature. The focus of this chapter is on parametric effects between linearly coupled harmonic oscillators, however, parametric modulation is also applicable with nonlinear couplings and anharmonic systems.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116941829","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}
{"title":"SIMP Dark Matter","authors":"Yonit Hochberg","doi":"10.21468/scipostphyslectnotes.59","DOIUrl":"https://doi.org/10.21468/scipostphyslectnotes.59","url":null,"abstract":"These notes summarize the zoom-course on Strongly Interacting Massive Particle (SIMP) dark matter given at the Les Houches Summer School in the summer of 2021. An alternative title for this course would be `SIMPS, Cannibals and ELDERs', where our focus is on high-point interactions amongst dark matter particles. The spirit of the course is to give students a taste of these exciting developments in dark matter, while primarily teaching tricks and methods that are tough to captivate when reading textbooks or papers. These notes are written in similar spirit: I will put emphasis on how quantities scale and how to perform back of the envelope estimates, which should serve to help you when you develop the next great dark matter idea.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127238909","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}
{"title":"Quantum to classical mapping of the two-dimensional toric code in an external field","authors":"Sydney Timmerman, Z. Bandic, R. Melko","doi":"10.21468/scipostphyslectnotes.57","DOIUrl":"https://doi.org/10.21468/scipostphyslectnotes.57","url":null,"abstract":"Kitaev's toric code Hamiltonian in dimension D=2 has been extensively studied for its topological properties, including its quantum error correction capabilities.\u0000While the Hamiltonian is quantum, it lies within the class of models that admits a D+1-dimensional classical representation.\u0000In these notes, we provide details of a Suzuki-Trotter expansion of the partition function of the toric code Hamiltonian in the presence of \u0000an external magnetic field.\u0000By coupling additional degrees of freedom in the form of a matter field that can subsequently be gauged away,\u0000we explicitly derive a classical Hamiltonian on a cubic lattice which takes the form of a non-isotropic \u00003D Ising gauge theory.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124398420","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}
E. Bergshoeff, Jos'e Figueroa-O'Farrill, Joaquim Gomis
{"title":"A non-lorentzian primer","authors":"E. Bergshoeff, Jos'e Figueroa-O'Farrill, Joaquim Gomis","doi":"10.21468/SciPostPhysLectNotes.69","DOIUrl":"https://doi.org/10.21468/SciPostPhysLectNotes.69","url":null,"abstract":"We review both the kinematics and dynamics of non-lorentzian theories and their associated geometries. First, we introduce non-lorentzian kinematical spacetimes and their symmetry algebras. Next, we construct actions describing the particle dynamics in some of these kinematical spaces using the method of nonlinear realisations. We explain the relation with the coadjoint orbit method. We continue discussing three types of non-lorentzian gravity theories: Galilei gravity, Newton-Cartan gravity and Carroll gravity. Introducing matter, we discuss electric and magnetic non-lorentzian field theories for three different spins: spin-0, spin-1/2 and spin-1, as limits of relativistic theories.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121270934","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}
{"title":"Seven Études on dynamical Keldysh model","authors":"D. Efremov, M. Kiselev","doi":"10.21468/SciPostPhysLectNotes.65","DOIUrl":"https://doi.org/10.21468/SciPostPhysLectNotes.65","url":null,"abstract":"We present a comprehensive pedagogical discussion of a family of\u0000models describing the propagation of a single particle in a\u0000multicomponent non-Markovian Gaussian random field. We report some exact\u0000results for single-particle Green’s functions, self-energy, vertex part\u0000and T-matrix. These results are based on a closed form solution of the\u0000Dyson equation combined with the Ward identity. Analytical properties of\u0000the solution are discussed. Further we describe the combinatorics of the\u0000Feynman diagrams for the Green’s function and the skeleton diagrams for\u0000the self-energy and vertex, using recurrence relations between the\u0000Taylor expansion coefficients of the self-energy. Asymptotically exact\u0000equations for the number of skeleton diagrams in the limit of large\u0000NN\u0000are derived. Finally, we consider possible realizations of a\u0000multicomponent Gaussian random potential in quantum transport via\u0000complex quantum dot experiments.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133440377","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}
{"title":"An introduction to the surface code","authors":"Andrew Cleland","doi":"10.21468/scipostphyslectnotes.49","DOIUrl":"https://doi.org/10.21468/scipostphyslectnotes.49","url":null,"abstract":"This chapter provides an introduction to the surface code, discussing details about how physical qubits are connected and operated to create logical qubits, how errors are handled, and what performance metrics are needed to generate logical qubits with performance that exceeds their underlying physical qubit performance.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122226514","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}
{"title":"Phase transitions above the upper critical dimension","authors":"B. Berche, Tim Ellis, Y. Holovatch, R. Kenna","doi":"10.21468/SciPostPhysLectNotes.60","DOIUrl":"https://doi.org/10.21468/SciPostPhysLectNotes.60","url":null,"abstract":"These lecture notes provide an overview of the renormalization group\u0000(RG) as a successful framework to understand critical phenomena above\u0000the upper critical dimension d_{uc}duc.\u0000After an introduction to the scaling picture of continuous phase\u0000transitions, we discuss the apparent failure of the Gaussian fixed point\u0000to capture scaling for Landau mean-field theory, which should hold in\u0000the thermodynamic limit above d_{uc}duc.\u0000We recount how Fisher’s dangerous-irrelevant-variable formalism applied\u0000to thermodynamic functions partially repairs the situation but at the\u0000expense of hyperscaling and finite-size scaling, both of which were,\u0000until recently, believed not to apply above\u0000d_{uc}duc.\u0000We recall limitations of various attempts to match the RG with\u0000analytical and numerical results for Ising systems. We explain how the\u0000extension of dangerous irrelevancy to the correlation sector is key to\u0000marrying the above concepts into a comprehensive RG scaling picture that\u0000renders hyperscaling and finite-size scaling valid in all dimensions.\u0000We collect what we believe is the current status of the theory,\u0000including some new insights and results. This paper is in grateful\u0000memory of Michael Fisher who introduced many of the concepts discussed\u0000and who, half a century later, contributed to their advancement.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123689688","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}
{"title":"New directions in the search for dark matter","authors":"S. Rajendran","doi":"10.21468/scipostphyslectnotes.56","DOIUrl":"https://doi.org/10.21468/scipostphyslectnotes.56","url":null,"abstract":"The identification of the nature of dark matter is one of the most\u0000important problems confronting particle physics. Current observational\u0000constraints permit the mass of the dark matter to range from\u000010^{-22}10−22\u0000eV - 10^{48}1048\u0000GeV. Given the weak nature of these bounds and the ease with which dark\u0000matter models can be constructed, it is clear that the problem can only\u0000be solved experimentally. In these lectures, I discuss methods to\u0000experimentally probe a wide range of dark matter candidates.","PeriodicalId":414352,"journal":{"name":"SciPost Physics Lecture Notes","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127740112","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}
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
