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Modification of the spin structure of high-molecular-weight
Modification of the spin structure of high-molecular-weight

... where Sk=Jk11 J 1. Note that the complete sequence of transitions ( 9 ,-+ 1,b~r2-t.. . -+ @12--+ $13) is realized for J 3>0 . Before going on to the magnetization, let us dwell briefly on the question of quantum reduction of the magnetic moments of the ions of the subcluster consisting of two sublat ...
Review of Bernard d`Espagnat, On physics and philosophy
Review of Bernard d`Espagnat, On physics and philosophy

Exercises 5: Toric Code and Topological Order
Exercises 5: Toric Code and Topological Order

Lecture notes - UCSD Department of Physics
Lecture notes - UCSD Department of Physics

... The subject of the course is regulated quantum field theory (QFT): we will study quantum field theories which can be constructed by starting from systems with finitely many degrees of freedom per unit volume, with local interactions between them. Often these degrees of freedom will live on a lattice ...
- Philsci
- Philsci

... it might be better to resist the very inference to the existence of such a property at all. As Hoefer (1999) argues, there is an explanatory itch here, but it is not clear one gains much by scratching it. Space constraints prevent me from saying more about this inference here, but I can point the r ...
Asymptotics and 6j-symbols 1 Introduction
Asymptotics and 6j-symbols 1 Introduction

... terms, and also a fixed-point formula for the character which may be regarded as a kind of exact semi-classical approximation. If G is a Lie group with Lie algebra g then its coadjoint representation g∗ decomposes as a union of symplectic coadjoint orbits under the action of G. Kirillov’s orbit prin ...
Quantum Entanglement and the Geometry of Spacetime
Quantum Entanglement and the Geometry of Spacetime

... • quantum criticality • topological order • renormalization-group flows • energy conditions • many-body localization • quenches • much more… In general, difficult to compute—even in free theories Simplifies in certain theories with many strongly-interacting fields… ...
Feynman, Einstein and Quantum Computing
Feynman, Einstein and Quantum Computing

... • “problem of manipulating and controlling things on a small scale” • talking about the “staggeringly small world that is below” • “what could be done if the laws are what we think; …we haven’t gotten round to it yet” ...
Notes - Personal Homepages
Notes - Personal Homepages

... to obey. For obvious reasons, they are called Einstein’s equations. In this equation R\mu \nu and R are functions of the metric and its derivatives up to second order, R\mu\nu is called the Ricci tensor, R is a derived function, the scalar curvature. These functions characterize the geometry of spac ...
2006-11-14-RAL-Wang - Indico
2006-11-14-RAL-Wang - Indico

Path  Integrals and the  Quantum Routhian David  Poland
Path Integrals and the Quantum Routhian David Poland

TWO-STATE SYSTEMS
TWO-STATE SYSTEMS

Notes on 2d quantum gravity and Liouville theory - lpthe
Notes on 2d quantum gravity and Liouville theory - lpthe

Matrix Geometry And Coherent states
Matrix Geometry And Coherent states

... ・ Difficulty in matrix models In the path-integral of matrix models, the geometry has become invisible. How can we recover the shape of membranes, D-branes or strings? Is there any good observables in MM, which characterize the classical geometry (shape) of membranes? ...
Holonomic Quantum Computation with Josephson Networks
Holonomic Quantum Computation with Josephson Networks

... completely in accordance with Eq. (3). Since Ja ¼ 0 may be desirable for quantum computation the loop is designed such that this condition can be satisfied ...
MF Nicolov, CF Woensdregt - Analysis of Crystal Structure and
MF Nicolov, CF Woensdregt - Analysis of Crystal Structure and

Lecture02
Lecture02

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Slide 1

Counting Quanta with Occam`s Razor
Counting Quanta with Occam`s Razor

... mechanics that does not have serious flaws, and that we ought to take seriously the possibility of finding some more satisfactory other theory, to which quantum merely a good approximation. Derivemechanics Born’s Rule is from the time-dependent Schrodinger equation ? ...
PPT File
PPT File

... When there is no initial correlation between the quantum system and stochastic process, we obtain the time-convolutionless (TCL) quantum master equation ...
Loop Quantum Gravity and Effective Matter Theories
Loop Quantum Gravity and Effective Matter Theories

The Casimir Effect 1 Introduction
The Casimir Effect 1 Introduction

Non-Equilibrium Quantum Many-Body Systems: Universal Aspects
Non-Equilibrium Quantum Many-Body Systems: Universal Aspects

... Quasiparticle momentum distribution function time-invariant due to lack of quasiparticle interaction. However, even Boltzmann dynamics from 2-quasiparticle interaction is generically ineffective in 1d! (No time evolution beyond prethermalized regime.) ...
Quantum Fields on Noncommutative Spacetimes: gy ?
Quantum Fields on Noncommutative Spacetimes: gy ?

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Scalar field theory

In theoretical physics, scalar field theory can refer to a classical or quantum theory of scalar fields. A scalar field is invariant under any Lorentz transformation.The only fundamental scalar quantum field that has been observed in nature is the Higgs field. However, scalar quantum fields feature in the effective field theory descriptions of many physical phenomena. An example is the pion, which is actually a pseudoscalar.Since they do not involve polarization complications, scalar fields are often the easiest to appreciate second quantization through. For this reason, scalar field theories are often used for purposes of introduction of novel concepts and techniques.The signature of the metric employed below is (+, −, −, −).
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