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Topology and its Applications, ISSN 0166-8641, 03/2020, Volume 272, p. 106984
Let G be a locally essential subgroup of a locally compact abelian group K. Then:(i)t(G)=χ(G)=χ(K), where t(G) and χ(G) are the tightness and the character of G, respectively... 
Radial group | Heisenberg group | (Locally) minimal group | Character | Nilpotent group | (Locally) precompact group | Sequential group | Metrizable group | Tightness | Fréchet-Urysohn group | Weight | (Locally) compact group | TOPOLOGICAL-GROUPS | MATHEMATICS, APPLIED | COUNTABLY COMPACT | MATHEMATICS | Frechet-Urysohn group
Journal Article
Annals of physics, ISSN 0003-4916, 2011, Volume 326, Issue 1, pp. 96 - 192
The density-matrix renormalization group method (DMRG) has established itself over the last decade as the leading method for the simulation of the statics and dynamics of one-dimensional strongly correlated quantum lattice systems... 
GROUP ALGORITHM | PHASE | PHYSICS, MULTIDISCIPLINARY | HEISENBERG CHAIN | FIELD-THEORY | THERMODYNAMIC LIMIT | T-J MODEL | SYSTEMS | QUANTUM SPIN CHAINS | ENTROPY | ANTIFERROMAGNETS | Algorithms | Density | Matrix | Lattice theory | Renormalization group methods | Correlation | Computer simulation | Dynamics | Lattices | Exposure | Dynamical systems | Age | Physics - Strongly Correlated Electrons | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | MATRICES | ONE-DIMENSIONAL CALCULATIONS | ALGORITHMS | POTENTIALS | QUANTUM STATES | SIMULATION | MATHEMATICAL LOGIC | DENSITY MATRIX | RENORMALIZATION
Journal Article
Physical review letters, ISSN 1079-7114, 2008, Volume 101, Issue 11, p. 117203
We numerically study the spin 1/2 antiferromagnetic Heisenberg model on the kagome lattice using the density-matrix renormalization group method... 
QUANTUM ANTIFERROMAGNETS | PHYSICS, MULTIDISCIPLINARY | HEISENBERG-ANTIFERROMAGNET | NEEL ORDER | MODEL | EXACT SPECTRA | LATTICE
Journal Article
Modern physics letters A, ISSN 1793-6632, 2019, Volume 34, Issue 31, p. 1950256
Quantum holonomies of closed paths on the torus [Formula: see text] are interpreted as elements of the Heisenberg group [Formula: see text... 
Quantum | Heisenberg group | ASTRONOMY & ASTROPHYSICS | PHYSICS, NUCLEAR | holonomies | PHYSICS, MATHEMATICAL | GEOMETRY | PHYSICS, PARTICLES & FIELDS
Journal Article
Journal of Chemical Theory and Computation, ISSN 1549-9618, 01/2018, Volume 14, Issue 1, pp. 166 - 179
.... The density matrix renormalization group (DMRG) brings such systems for the first time easily within reach of multireference wave function methods by enabling the use of unprecedentedly large active spaces... 
OXYGEN-EVOLVING COMPLEX | BINUCLEAR COMPLEXES | TRANSITION-METAL-COMPLEXES | AB-INITIO | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | PHOTOSYSTEM-II | CHEMISTRY, PHYSICAL | BASIS-SETS | MAGNETIC-PROPERTIES | FUNCTIONAL CALCULATIONS | HEISENBERG EXCHANGE | BROKEN SYMMETRY APPROACH
Journal Article
International journal of mathematics, ISSN 1793-6519, 2019, Volume 30, Issue 9, p. 1950045
We study in this paper the local rigidity proprieties of deformation parameters of the natural action of a discontinuous group [Formula: see text... 
proper action | SPACE | MATHEMATICS | LIE-GROUPS | THEOREM | discontinuous group | deformation space | Heisenberg motion group | local rigidity | SUBGROUPS
Journal Article
Journal of Physics A: Mathematical and Theoretical, ISSN 1751-8121, 09/2009, Volume 42, Issue 35, pp. 353001 - 353001 (28)
...). A single formula for the bases is obtained from a polar decomposition of SU(2) and is analyzed in terms of cyclic groups, quadratic Fourier transforms, Hadamard matrices and generalized Gauss sums... 
PHASE | SYMMETRY | REPRESENTATIONS | PHYSICS, MULTIDISCIPLINARY | RACAH ALGEBRA | LINE | QUANTUM-SYSTEMS | MEAN KINGS PROBLEM | PHYSICS, MATHEMATICAL | WIGNER | OPERATORS | Physics - Quantum Physics | Quantum Physics | Physics
Journal Article
Forum Mathematicum, ISSN 0933-7741, 01/2020, Volume 32, Issue 1, pp. 189 - 199
We obtain some new results about products of large and small sets in the Heisenberg group as well as in the affine group over the prime field... 
affine group | Heisenberg group | 11B75 | growth | 11B13 | sum-product | MATHEMATICS | MATHEMATICS, APPLIED | FINITE | THEOREM
Journal Article
Geometriae Dedicata, ISSN 0046-5755, 2/2018, Volume 192, Issue 1, pp. 157 - 170
We show that if A is a closed subset of the Heisenberg group whose vertical projections are nowhere dense, then the complement of A is... 
Geometry | Quasiconvexity | 53C17 | Heisenberg group | Mathematics | Carnot–Caratheodory | MATHEMATICS | Carnot-Caratheodory | CARNOT GROUPS | DIMENSION | SPACES | GEOMETRY
Journal Article
Journal of Differential Equations, ISSN 0022-0396, 2017, Volume 262, Issue 3, pp. 1799 - 1821
...–Kohn–Nirenberg type inequalities on stratified groups and study some of their consequences. Our results reflect on many results previously known in special cases... 
Rellich inequality | Hardy inequality | Horizontal estimate | p-sub-Laplacian | Stratified group | Caffarelli–Kohn–Nirenberg inequality | MATHEMATICS | HEISENBERG-GROUP | CONSTANTS | Caffarelli-Kohn-Nirenberg inequality | EXTREMAL-FUNCTIONS
Journal Article