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Dynamics of a Quantum Spin Liquid
This thesis presents an exact theoretical study of dynamical correlation functions in different phases of a two-dimensional quantum spin liquid. By calculating the dynamical spin structure factor and the Raman scattering cross section, this thesis shows that there are salient signatures—qualitative and quantitative—of the Majorana fermions and the gauge fluxes emerging as effective degrees of freedom in the exactly solvable Kitaev honeycomb lattice model. The model is a representative of a class of spin liquids with Majorana fermions coupled to Z2 gauge fields. The qualitative features of the response functions should therefore be characteristic for this broad class of topological states.
Migration
Migration is in the news every day. Whether it be the plight of refugees fleeing Syria, or the outbreak of the Zika virus across Latin America, the modern world is fundamentally shaped by movement across borders. Migration, arising from the 2018 Darwin College Lectures, brings together eight leading scholars across the arts, humanities, and sciences to help tackle one of the most important topics of our time. What is migration? How has it changed the world? And how will it shape the future? The authors approach these questions from a variety of perspectives, including history, politics, epidemiology, and art. Chapters related to policy, as well as those written by leading journalists and broadcasters, give perspective on how migration is understood in the media, and engage the public more widely. This interdisciplinary approach provides an original take on migration, providing new insights into the making of the modern world.
Migration
Eight interdisciplinary essays by leading scholars and public figures discuss the timely theme of migration in a range of contexts.
The Poll Taxes of 1377, 1379, and 1381: Part 1: Bedfordshire-Leicestershire
Provides an intriguing and detailed picture of late fourteenth century EnglandPresents complex material in a clear formatThe English poll taxes of 1377, 1379, and 1381 taxed householders, wives, dependants, and servants individually. The tax records therefore provide information about people who are rarely, if ever, mentioned in other documents - frequently including details of occupations and relationships. The widely varying documents associated with the taxes are being published in three volumes, to make this massive resource accessible to social and economic historians, demographers, and genealogists. This first volume, which covers all three taxes for Bedfordshire to Leicestershire, includes extensive editorial descriptions of the documents, explanations of the collection and recording processes, and a discussion of the relevance and value of this exciting material. Full indexes of original and contemporary place names and a glossary of occupations will appear in the third volume.Readership: Scholars and students of medieval history, economic and social historians, local historians, genealogists.
Accounts and Papers
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Episcopal Registers
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