Order by disorder in a four-flavor Mott insulator on the fcc lattice
... in real materials or proposed by theorists for academic interest can now be realized [20–26]. A large variety of ground states has been put forward for the SU(4) Heisenberg models. A quantum liquid with algebraically decaying spin-spin correlations is formed in the one-dimensional chain [4,27] (whic ...
... in real materials or proposed by theorists for academic interest can now be realized [20–26]. A large variety of ground states has been put forward for the SU(4) Heisenberg models. A quantum liquid with algebraically decaying spin-spin correlations is formed in the one-dimensional chain [4,27] (whic ...
Quantum Phase Transitions
... each ‘site’ j there two qubit quantum states |↑ij and |↓ij (in practice, these could be 2 magnetic states of an ion at site j in a crystal). The Hilbert space therefore consists of 2N states, each consisting of a tensor product of ...
... each ‘site’ j there two qubit quantum states |↑ij and |↓ij (in practice, these could be 2 magnetic states of an ion at site j in a crystal). The Hilbert space therefore consists of 2N states, each consisting of a tensor product of ...
Theoretical study of the phase evolution in a quantum dot in the
... 2. This result is beyond the simple single-level Anderson model (SLAM) description and supposes to consider the generalisation to the multi-level Anderson model (MLAM). Done here in a minimal way by introducing a multiplicative factor in front of the S-matrix in order to guarantee the generalized Le ...
... 2. This result is beyond the simple single-level Anderson model (SLAM) description and supposes to consider the generalisation to the multi-level Anderson model (MLAM). Done here in a minimal way by introducing a multiplicative factor in front of the S-matrix in order to guarantee the generalized Le ...
Bose-Einstein condensation of excitons and cold atoms OECS13
... An indirect exciton is a bound pair of an electron and a hole confined in spatially separated semiconductor layers. Long lifetimes of indirect excitons allow them to cool down to low temperatures below the temperature of quantum degeneracy. In coherent exciton gases the spin relaxation mechanisms li ...
... An indirect exciton is a bound pair of an electron and a hole confined in spatially separated semiconductor layers. Long lifetimes of indirect excitons allow them to cool down to low temperatures below the temperature of quantum degeneracy. In coherent exciton gases the spin relaxation mechanisms li ...
8. Quantum field theory on the lattice
... The continuum limit for this action is the same as for the compact action (check it!). The difference in the continuum limit is in the higher order O(a2 ) terms. At finite a the physics can be quite different! Note: switch 21 [·]2 7→ (1 − cos[·]), and you recover the compact action. Non-compact U(1) ...
... The continuum limit for this action is the same as for the compact action (check it!). The difference in the continuum limit is in the higher order O(a2 ) terms. At finite a the physics can be quite different! Note: switch 21 [·]2 7→ (1 − cos[·]), and you recover the compact action. Non-compact U(1) ...
Some Open Problems in Exactly Solvable Models
... These investigations based on various methods (Algebraic Bethe Ansatz, quantum Knizhnik-Zamolodchikov equation, quantum groups, etc.) allowed for the very first time to obtain information about the short and large distance asymptotic behavior of correlation functions of models not equivalent to free ...
... These investigations based on various methods (Algebraic Bethe Ansatz, quantum Knizhnik-Zamolodchikov equation, quantum groups, etc.) allowed for the very first time to obtain information about the short and large distance asymptotic behavior of correlation functions of models not equivalent to free ...
Lecture 21: Mean Field Theory of Ferromagnetism
... moments of partially filled shells in insulators containing transitional metal ions, conduction electrons) do not interact with each other The assumption about noninteracting magnetic moments must be dropped to describe variety of phenomena caused by magnetic interactions. For instance, some materia ...
... moments of partially filled shells in insulators containing transitional metal ions, conduction electrons) do not interact with each other The assumption about noninteracting magnetic moments must be dropped to describe variety of phenomena caused by magnetic interactions. For instance, some materia ...
The Gutzwiller Density Functional Theory - cond
... suitable for a self-consistent merger with the DFT. 3. Apart from ground-state properties the method allows us to calculate quasi-particle excitations and two-particle response functions. 4. Systematic improvements of the infinite D limit are possible and sometimes necessary to study, e.g., correlat ...
... suitable for a self-consistent merger with the DFT. 3. Apart from ground-state properties the method allows us to calculate quasi-particle excitations and two-particle response functions. 4. Systematic improvements of the infinite D limit are possible and sometimes necessary to study, e.g., correlat ...
instroduction_a_final
... Some operators may have many EigenFunctions. Note: In NMR, we are interested in Energy levels that corresponding to the wavefunctions. Operators are important tools for us to find these values as the EigenValue. To find these EigenValues and Eigenfunctions, we have to find the Operators ---- Energy ...
... Some operators may have many EigenFunctions. Note: In NMR, we are interested in Energy levels that corresponding to the wavefunctions. Operators are important tools for us to find these values as the EigenValue. To find these EigenValues and Eigenfunctions, we have to find the Operators ---- Energy ...
Chapter 3 Basic quantum statistical mechanics of spin
... quotes because it is of course not possible to measure all three components of a quantum spin). The HIlbert space of a quantum spin is defined by choosing a representation of the spin operators. A representation of a Lie algebra is a set of three matrices satisfying the commutation relations, for su ...
... quotes because it is of course not possible to measure all three components of a quantum spin). The HIlbert space of a quantum spin is defined by choosing a representation of the spin operators. A representation of a Lie algebra is a set of three matrices satisfying the commutation relations, for su ...
rangus-prezentacija
... With a special pulse sequence the magnetic moments are gathered before the recording starts An efficient method to avoid dead time problem ...
... With a special pulse sequence the magnetic moments are gathered before the recording starts An efficient method to avoid dead time problem ...
Document
... Analysis of IR - Spectra of Unknown Compounds 1. frequency, shape, intensity of an absorption band have all to be considered in the interpretation 2. all characteristic absorption frequencies of a functional group have to be considered (band can be missing or is caused by another function) 3. first ...
... Analysis of IR - Spectra of Unknown Compounds 1. frequency, shape, intensity of an absorption band have all to be considered in the interpretation 2. all characteristic absorption frequencies of a functional group have to be considered (band can be missing or is caused by another function) 3. first ...
list_of_posterpresentation
... “Matrix model and random matrix theory analysis of protein” Abstract: Static and dynamical structures of protein is analyzed using the matrix model and the random matrix theory, respectively. Protein 3d structures registered in PDB [1] exceed 100,000 kinds and the detailed analysis becomes current ...
... “Matrix model and random matrix theory analysis of protein” Abstract: Static and dynamical structures of protein is analyzed using the matrix model and the random matrix theory, respectively. Protein 3d structures registered in PDB [1] exceed 100,000 kinds and the detailed analysis becomes current ...
Absence of spin liquid in non-frustrated correlated systems
... as follows: The density of states N (ω) can be computed by numerically integrating the spectral function A(k, ω) over wavevectors. We compute N (ω + iη) at ω = 0 for a few values of the Lorenzian broadening η and extrapolate η → 0 using a polynomial fit. The result of this extrapolation should vanis ...
... as follows: The density of states N (ω) can be computed by numerically integrating the spectral function A(k, ω) over wavevectors. We compute N (ω + iη) at ω = 0 for a few values of the Lorenzian broadening η and extrapolate η → 0 using a polynomial fit. The result of this extrapolation should vanis ...
Davies Maps - Fernando Brandao
... The stationary state is the thermal (Gibbs) state: • (Metropolis et al ’53) “We devised a general method to calculate the properties of any substance comprising individual molecules with classical statistics” • Example of Markov Chain Monte Carlo method. Extremely useful algorithmic technique ...
... The stationary state is the thermal (Gibbs) state: • (Metropolis et al ’53) “We devised a general method to calculate the properties of any substance comprising individual molecules with classical statistics” • Example of Markov Chain Monte Carlo method. Extremely useful algorithmic technique ...
Electron Transport in a Double Quantum Dot Governed by a... Oleg N. Jouravlev* and Yuli V. Nazarov
... different realizations at time scale of a single measurement. Since nuclear relaxation times are large, this point deserves some discussion. In fact, raw data acquisition time in experiment [15] was 0.1 s per point, which is probably less than the relaxation time. However, the raw data are noisy (se ...
... different realizations at time scale of a single measurement. Since nuclear relaxation times are large, this point deserves some discussion. In fact, raw data acquisition time in experiment [15] was 0.1 s per point, which is probably less than the relaxation time. However, the raw data are noisy (se ...
