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Coherent Decay of Bose-Einstein Condensates
Coherent Decay of Bose-Einstein Condensates

Spins in quantum dots: Hyperfine interaction, transport, and
Spins in quantum dots: Hyperfine interaction, transport, and

Spin-Orbital Separation in the quasi 1D Mott
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... to obtain a better understanding of the electrical conductivity of the transition metals and their disordered binary substitutional alloys both by themselves and in relationship to each other within the statistical mechanical approach. Thus our consideration will concentrate on the derivation of gen ...
Quantum Mechanics of Many-Particle Systems: Atoms, Molecules
Quantum Mechanics of Many-Particle Systems: Atoms, Molecules

... difficulties: these will be reduced by providing translations into some of the world’s most widely used languages. Dr. Angel S. Sanz (Madrid) is preparing Spanish versions of the books and his initiative is most warmly appreciated. In 2014 it is our hope that translators will be found for French and ...
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... bosonic atoms is cooled below a critical temperature where a considerable fraction of the atoms occupy the same quantum state according to Bose-Einstein statistics. Bose-Einstein condensates (BECs) were first theorized by Bose and Einstein in the 1920s [1] but not experimentally realized until 1995 ...
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... [1], a pure 2D crystal consisting of carbon atoms arranged in a honey-comb lattice. For a long time before graphene had been considered only by theoreticians as a basic block used to build theory for graphite [2] and carbon nanotubes [3]. Its existence was doubt since the theory predicted that perfe ...
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Electron spin resonance (ESR) spectroscopy of low

... lenges? Due to the huge potential of novel magnetic materials, several disciplines like chemistry, metallurgy and physics attend the subject from dierent approaches, seeking for a reliable modeling and the elucidation of practical applications. Since the current study will focus on the area of magn ...
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... physics. It is common to view these interactions through one of two lenses. Either light alters the properties of the atoms or atoms alter the properties of the light. There are several ways of examining the atoms and photons: classically, semiclassically, or quantum mechanically. The system under c ...
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... in the expansion (2.10) of X̂ become more and more singular. In fact, as we shall see, the expansion does not even converge, even for an infinitesimally small ǫ. All atomic systems contain such potentials and the Feynman formula (2.14) cannot be used to calculate an approximation for the transition ...
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... The aim of this bachelor thesis is to give an introduction to the electronic properties of graphene as well as to graphene’s behavior in an external magnetic field perpendicular to it. After a brief motivation in the following section 1.1, we will work out the basic properties of graphene in chapter ...
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... Spectacular experimental discoveries, such as patterns found in the hadronic spectrum [40, 83], electroweak gauge bosons [89], and scaling in deep inelastic scattering [38], parallel the discovery of the detailed orbits of planets and moons, or of discrete atomic spectra. On the other hand, equally ...
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Lecture Notes in Quantum Mechanics Doron Cohen

... [4] A. Messiah, Quantum Mechanics. [for the graduates] The major attempt in this set of lectures was to give a self contained presentation of quantum mechanics, which is not based on the historical ”quantization” approach. The main inspiration comes from Ref.[3] and Ref.[1]. The challenge was to fin ...
Lecture Notes in Quantum Mechanics Doron Cohen
Lecture Notes in Quantum Mechanics Doron Cohen

... [4] A. Messiah, Quantum Mechanics. [for the graduates] The major attempt in this set of lectures was to give a self contained presentation of quantum mechanics, which is not based on the historical ”quantization” approach. The main inspiration comes from Ref.[3] and Ref.[1]. The challenge was to fin ...
Discrete vs continuous controversy in physics
Discrete vs continuous controversy in physics

... jointly accounts for the instantaneous growth rate a and for the delay h0 that takes place between the action ag(xn ) and its consequence on the following state xn+1 . It is thus not surprising that h appears as a control parameter of ...
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Lattice quantum field theory

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Ph.D. thesis - Chin Lab at the University of Chicago

... group member to build up the cesium experiment together. I had little experimental experience then, and didn’t realize until much later how much time and thought Cheng had put into training me towards a qualified experimentalist. I learned to form good working habits, to acquire the basics in electr ...
Quixotic Order and Broken Symmetry in the Quantum Hall Effect and
Quixotic Order and Broken Symmetry in the Quantum Hall Effect and

... associated with a semiconductor valley index, in each case deriving effective descriptions from microscopic Hamiltonians and symmetry arguments. Our first example, relevant to aluminium arsenide quantum wells, exhibits nematic ordering that has observable consequences for transport in both dirty and c ...
84, 013608 (2011)
84, 013608 (2011)

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Ising model

The Ising model (/ˈaɪsɪŋ/; German: [ˈiːzɪŋ]), named after the physicist Ernst Ising, is a mathematical model of ferromagnetism in statistical mechanics. The model consists of discrete variables that represent magnetic dipole moments of atomic spins that can be in one of two states (+1 or −1). The spins are arranged in a graph, usually a lattice, allowing each spin to interact with its neighbors. The model allows the identification of phase transitions, as a simplified model of reality. The two-dimensional square-lattice Ising model is one of the simplest statistical models to show a phase transition.The Ising model was invented by the physicist Wilhelm Lenz (1920), who gave it as a problem to his student Ernst Ising. The one-dimensional Ising model has no phase transition and was solved by Ising (1925) himself in his 1924 thesis. The two-dimensional square lattice Ising model is much harder, and was given an analytic description much later, by Lars Onsager (1944). It is usually solved by a transfer-matrix method, although there exist different approaches, more related to quantum field theory.In dimensions greater than four, the phase transition of the Ising model is described by mean field theory.
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