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Simulating the Haldane phase in trapped
Simulating the Haldane phase in trapped

... initial phase difference of the two effective transitions. The same carrier transitions, only without detunings, are used in our later approach as dressing fields that transform the system into the dressed state basis (b), thus protecting it from the magnetic noise. ...
Shortest Vector In A Lattice is NP-Hard to approximate - CS
Shortest Vector In A Lattice is NP-Hard to approximate - CS

... we take   b 1 , we get:  ( L(L))  2ln   2(1   )ln b ...
Interplay between Classical Magnetic Moments and Superconductivity in Quantum
Interplay between Classical Magnetic Moments and Superconductivity in Quantum

... the RKKY interaction. Therefore, the same mechanism can apply if the nuclear spins are replaced by classical magnetic moments forming a 1D lattice (not necessarily a regular one), such as magnetic adatoms on top of a metallic surface [14]. When a finite-sized helical liquid is put in proximity of an ...
Chapter 5 Angular Momentum and Spin
Chapter 5 Angular Momentum and Spin

... Figure 5.2: Stern and Gerlach observed two distinct beams rather than a classical continuum. In 1924 Wolfgang Pauli postulated two-valued quantum degrees of freedom when he formulated his exclution principle, but he first opposed the idea of rotating electrons. In 1926 Samuel A. Goudsmit and George ...
84, 085123 (2011)
84, 085123 (2011)

... The presence of the bulk energy gap indicates an insulating state of the system. Another interesting feature of our system is that there is no gap between the second and third bands. Instead, the valley centers at these two bands shift to opposite directions due to the lack of in-plane rotation symm ...
Homonuclear 2D Experiments
Homonuclear 2D Experiments

... •Transferring magnetization through scalar coupling is a “coherent” process. This means that all of the spins are doing the same thing at the same time. •Relaxation is an “incoherent” process, because it is caused by random fluxuations that are not coordinated. •The nuclear Overhauser effect (NOE) i ...
Suppression of Shot Noise in Quantum Point Contacts in the... A. Golub, T. Aono, and Yigal Meir
Suppression of Shot Noise in Quantum Point Contacts in the... A. Golub, T. Aono, and Yigal Meir

... where cyk ck  creates (destroys) an electron with momen2 tum k and spin  in lead L or R, "1   " and "  "  U, where " is the energy of local spin state  and U is the on-site interaction. S~ is the local spin due to the bound state. The potential scattering term (first line), usually ...
Coherent states and the reconstruction of pure spin states
Coherent states and the reconstruction of pure spin states

... ambiguity is present for each of the 2s zeros of |ψi, giving rise to a total of 22s states† compatible with the data p. It is straightforward to remove the ambiguity by a second series of measurements. Step II. It remains to find out whether a zero is located at zn0 or at (zn0 )∗ , n = 1, . . . , 2s ...
Dilute Fermi and Bose Gases - Subir Sachdev
Dilute Fermi and Bose Gases - Subir Sachdev

... LF is just a free field theory. Like ZB , ZF has a quantum critical point at µ = 0, T = 0 and we will discuss its properties; in particular, we will show that all possible fermionic nonlinearities are irrelevant near it. The reader should not be misled by the apparently trivial nature of the model i ...
Guide - Physics 122
Guide - Physics 122

The Berry-Tabor conjecture
The Berry-Tabor conjecture

... be dropped, since one can construct an uncountable set of tori with area 4π (say), whose pair correlation density does not converge, as pointed out by Sarnak [21]. In some sense, such tori feel the degeneracies in the spectra of tori corresponding to rational forms. The above uncountable set is in f ...
Single-exciton spectroscopy of single Mn doped InAs quantum dots
Single-exciton spectroscopy of single Mn doped InAs quantum dots

... and by single exciton spectroscopy in semiconductor quantum dots,6–8 among other techniques. These experiments permit addressing a single-quantum object: the spin of the magnetic atom, and studying its exchange interactions with surrounding carriers. Quantum dots doped with a single magnetic atom ar ...
pptx
pptx

... derived before for the magnetization precession around any external magnetic field. For spins higher than ½ the number of elements of the angular momentum components becomes larger and we will have to show that these components also result in a precession motion of its classical magnetization. For f ...
ISCQI-Dec_Bhubaneswar
ISCQI-Dec_Bhubaneswar

Nanophotonics I: quantum theory of microcavities Paul Eastham
Nanophotonics I: quantum theory of microcavities Paul Eastham

Magnetism
Magnetism

... moment to follow the spin-only formula. Now, it happens that for a number of the transition metals in commonly occurring oxidation states the d-electron configurations give rise to A or E ground terms (e.g. d3 Cr3+; d5 (Mn2+, Fe3+), d8 (Ni2+), d9 (Cu2+)) and thus should give magnetic moments in good ...
Chapter 3 Approximation Methods in QM
Chapter 3 Approximation Methods in QM

... As we know, the eigenstates of Ĥ0 can be represented by the product of orbital wavefunctions and spin wavefunctions, or |nlmi |sms i = |nlml sms i. Within the first-order degenerate PT, we need to use these |nlml sms i to diagonalize the perturbation operator V̂LS and to obtain the zero-order wavef ...
Theoretical studies of frustrated magnets with dipolar interactions
Theoretical studies of frustrated magnets with dipolar interactions

... theoretical models, such as classical Ising or Heisenberg spin systems, and, to some extent, such models are able to qualitatively expose many experimentally observed phenomena. But often, to account for complex behavior of magnetic matter, such models have to be refined by including more terms in H ...
Regularization - Hitoshi Murayama
Regularization - Hitoshi Murayama

Dimension Analysis - Bose Education Centre
Dimension Analysis - Bose Education Centre

... Q2: What are dimensional constants? Answer: Constants which possess dimensions are called dimensional constants. E.g. Planck' Constant. Q3: What are dimensional variables? Answer: Those physical quantities which possess dimensions but do not have a fixed value are called dimensional variables. E.g. ...
7.1 Electronic states of helium atom 7.2 The Variation Method
7.1 Electronic states of helium atom 7.2 The Variation Method

... The Hamiltonian operator of the atom that we are considering, e.g. eq 7.1 for He, is a function of only the spatial variables of the electrons whereas ̂ and ̂ are functions of the spin variables. Therefore, the latter operators trivially commute with ̂ . Hence the state functions of an atom must be ...
112, 110404 (2014)
112, 110404 (2014)

... be constructed to quench kinetics in one dimension, but the absence of kinetics in 1D flatbands would appear to rule out Luttinger-liquid behavior. In this Letter, we show that kinetics, fractionalized charge excitations, and other Luttinger-liquid–like properties emerge solely from interactions in ...
Ground-state properties of the attractive one
Ground-state properties of the attractive one

Density matrix renormalization group method (Swapan K Pati)
Density matrix renormalization group method (Swapan K Pati)

... Antiferromagnetic exchange J=4t2/U Localized QM spin degrees of freedom: (2S+1)N for N spin-S objects. A model to describe quantum magnetism in most of the oxide materials or any system with localized spin orbitals Bethe-ansatz (closed form exact) solution exist only in 1D A good model for describin ...
Electron spin and probability current density in quantum mechanics
Electron spin and probability current density in quantum mechanics

... momentum for an arbitrary spinor state W. From that he identifies a spin probability current density. His result is the same as our Eq. (32), except that it does not include the g-factor. His paper has a discussion of why that might be appropriate. Nowakowski obtains Eq. (32) by starting from the re ...
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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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