Editorial Board
Publication date: 2 August 2019Source: Physics Reports, Volume 820Author(s): (Source: Physics Reports)
Source: Physics Reports - September 15, 2019 Category: Physics Source Type: research
Conserved charges in extended theories of gravity
Publication date: Available online 10 September 2019Source: Physics ReportsAuthor(s): Hamed Adami, Mohammad Reza Setare, Tahsin Çağrı Şişman, Bayram TekinAbstractWe give a detailed review of construction of conserved quantities in extended theories of gravity for asymptotically maximally symmetric spacetimes and carry out explicit computations for various solutions. Our construction is based on the Killing charge method, and a proper discussion of the conserved charges of extended gravity theories with this method requires studying the corresponding charges in Einstein’s theory with or without a cosmological constan...
Source: Physics Reports - September 11, 2019 Category: Physics Source Type: research
Duality between (2+1)d quantum critical points
Publication date: Available online 9 September 2019Source: Physics ReportsAuthor(s): T. Senthil, Dam Thanh Son, Chong Wang, Cenke XuAbstractDuality refers to two equivalent descriptions of the same theory from different points of view. Recently there has been tremendous progress in formulating and understanding possible dualities of quantum many body theories in 2+1-spacetime dimensions. Of particular interest are dualities that describe conformally invariant quantum field theories in (2+1)d. These arise as descriptions of quantum critical points in condensed matter physics. The appreciation of the possible dual descriptio...
Source: Physics Reports - September 9, 2019 Category: Physics Source Type: research
Chaos in time delay systems, an educational review
Publication date: Available online 16 August 2019Source: Physics ReportsAuthor(s): Hendrik Wernecke, Bulcsú Sándor, Claudius GrosAbstractThe time needed to exchange information in the physical world induces a delay term when the respective system is modeled by differential equations. Time delays are hence ubiquitous, being furthermore likely to induce instabilities and with it various kinds of chaotic phases. Which are then the possible types of time delays, induced chaotic states, and methods suitable to characterize the resulting dynamics? This review presents an overview of the field that includes an in-depth discussi...
Source: Physics Reports - August 17, 2019 Category: Physics Source Type: research
Time-reversal-invariant topological superconductivity in one and two dimensions
Publication date: Available online 14 August 2019Source: Physics ReportsAuthor(s): Arbel Haim, Yuval OregAbstractA topological superconductor is characterized by having a pairing gap in the bulk and gapless self-hermitian Majorana modes at its boundary. In one dimension, these are zero-energy modes bound to the ends, while in two dimensions these are chiral gapless modes traveling along the edge. Majorana modes have attracted a lot of interest due to their exotic properties, which include non-abelian exchange statistics. Progress in realizing topological superconductivity has been made by combining spin–orbit coupling, c...
Source: Physics Reports - August 16, 2019 Category: Physics Source Type: research
Variational and Parquet-diagram theory for strongly correlated normal and superfluid systems
Publication date: Available online 8 August 2019Source: Physics ReportsAuthor(s): H.-H. Fan, E. KrotscheckAbstractWe develop the variational and correlated basis functions/parquet-diagram theory of strongly interacting normal and superfluid systems. The first part of this contribution is devoted to highlight the connections between the Euler equations for the Jastrow-Feenberg wave function on the one hand side, and the ring, ladder, and self-energy diagrams of parquet-diagram theory on the other side. We will show that these subsets of Feynman diagrams are contained, in a local approximation, in the variational wave functi...
Source: Physics Reports - August 9, 2019 Category: Physics Source Type: research
Coevolution spreading in complex networks
Publication date: Available online 29 July 2019Source: Physics ReportsAuthor(s): Wei Wang, Quan-Hui Liu, Junhao Liang, Yanqing Hu, Tao ZhouAbstractThe propagations of diseases, behaviors and information in real systems are rarely independent of each other, but they are coevolving with strong interactions. To uncover the dynamical mechanisms, the evolving spatiotemporal patterns and critical phenomena of networked coevolution spreading are extremely important, which provide theoretical foundations for us to control epidemic spreading, predict collective behaviors in social systems, and so on. The coevolution spreading dynam...
Source: Physics Reports - July 30, 2019 Category: Physics Source Type: research
Editorial Board
Publication date: 20 July 2019Source: Physics Reports, Volume 818Author(s): (Source: Physics Reports)
Source: Physics Reports - July 6, 2019 Category: Physics Source Type: research
Review of the semiclassical formalism for multiparticle production at high energies
Publication date: Available online 3 July 2019Source: Physics ReportsAuthor(s): Valentin V. Khoze, Joey ReinessAbstractThese notes provide a comprehensive review of the semiclassical approach for calculating multiparticle production rates for initial states with few particles at very high energies. In this work we concentrate on a scalar field theory with a mass gap. Specifically, we look at a weakly-coupled theory in the high-energy limit, where the number of particles in the final state scales with energy, n∼E→∞, and the coupling λ→0 with nλ held fixed. In this regime, the semiclasical approach allows us to cal...
Source: Physics Reports - July 4, 2019 Category: Physics Source Type: research
Editorial Board
Publication date: 10 July 2019Source: Physics Reports, Volume 817Author(s): (Source: Physics Reports)
Source: Physics Reports - July 3, 2019 Category: Physics Source Type: research
A living theory catalogue for fast radio bursts
Publication date: Available online 27 June 2019Source: Physics ReportsAuthor(s): E. Platts, A. Weltman, A. Walters, S.P. Tendulkar, J.E.B. Gordin, S. KandhaiAbstractAt present, we have almost as many theories to explain Fast Radio Bursts as we have Fast Radio Bursts observed. This landscape will be changing rapidly with CHIME/FRB, recently commissioned in Canada, and HIRAX, under construction in South Africa. This is an opportune time to review existing theories and their observational consequences, allowing us to efficiently curtail viable astrophysical models as more data becomes available. In this article we provide a c...
Source: Physics Reports - June 27, 2019 Category: Physics Source Type: research
Network dynamics of coupled oscillators and phase reduction techniques
Publication date: Available online 25 June 2019Source: Physics ReportsAuthor(s): Bastian Pietras, Andreas DaffertshoferAbstractInvestigating the dynamics of a network of oscillatory systems is a timely and urgent topic. Phase synchronization has proven paradigmatic to study emergent collective behavior within a network. Defining the phase dynamics, however, is not a trivial task. The literature provides an arsenal of solutions, but results are scattered and their formulation is far from standardized. Here, we present, in a unified language, a catalogue of popular techniques for deriving the phase dynamics of coupled oscill...
Source: Physics Reports - June 27, 2019 Category: Physics Source Type: research
Rapid solidification as non-ergodic phenomenon
Publication date: Available online 18 June 2019Source: Physics ReportsAuthor(s): P.K. Galenko, D. JouAbstractRapid solidification is a relevant physical phenomenon in material sciences, whose theoretical analysis requires going beyond the limits of local equilibrium statistical physics and thermodynamics and, in particular, taking account of ergodicity breaking and of generalized formulation of thermodynamics. The ergodicity breaking is related to the time symmetry breaking and to the presence of some kinds of fluxes and gradient flows making that an average of microscopic variables along time is different that an average ...
Source: Physics Reports - June 18, 2019 Category: Physics Source Type: research
Editorial Board
Publication date: 25 June 2019Source: Physics Reports, Volume 815Author(s): (Source: Physics Reports)
Source: Physics Reports - June 13, 2019 Category: Physics Source Type: research
Editorial Board
Publication date: 3 July 2019Source: Physics Reports, Volume 816Author(s): (Source: Physics Reports)
Source: Physics Reports - June 13, 2019 Category: Physics Source Type: research
