Results 21 to 30 of about 17,345 (180)

Quantum states of elementary three-geometry [PDF]

, 2001
We introduce a quantum volume operator $K$ in three--dimensional Quantum Gravity by taking into account a symmetrical coupling scheme of three SU(2) angular momenta.
Annalisa Marzuoli, Ashtekar A, Baez J C, Biedenharn L C, Chakrabarti A, De Pietri R, Gaspare Carbone, Lewandowski J, Lévy-Leblond J M, Mauro Carfora, Penrose R, Ponzano G, Regge T, Roberts J   +13 more
core   +2 more sources

An Empirical Analysis of Economic and Socio-Demographic Determinants of Entrepreneurship Across German Regions

International Journal of Management and Economics, 2014
Entrepreneurship is fundamental for a country's economic development through its positive effect on innovation, productivity growth, and job creation. In entrepreneurial research, one of the most important problems is to define the factors that actually ...
Mrożewski Matthias
doaj   +1 more source

Simple operation sequences to couple and interchange quantum information between spin qubits of different kinds [PDF]

, 2015
Efficient operation sequences to couple and interchange quantum information between quantum dot spin qubits of different kinds are derived using exchange interactions. In the qubit encoding of a single-spin qubit, a singlet-triplet qubit, and an exchange-
DiVincenzo, David P., Mehl, Sebastian
core   +2 more sources

Wages in Labour Market Theories

Folia Oeconomica Stetinensia, 2015
Already classical economists took interest in the role of wages and wage formation mechanisms, as well as in their influence on other components of the labour market.
Kryńska Elżbieta, Kopycińska Danuta
doaj   +1 more source

Teach me to fish instead of giving me fish: Foreign development aid and employment in Africa

World Development Sustainability, 2022
This paper aims to verify the effect of Official Development Assistance (ODA) on employment in Africa, considering sectoral employment and sub-regional groupings. The data is collected for 37 African countries between the 1996 to 2019 periods.
Tii N. Nchofoung, Arsène A. Njamen Kengdo, Eric Mouchili Moumie, Tii Tasheh Fonsoh   +3 more
doaj   +1 more source

Open strings in Lie groups and associative products [PDF]

, 2006
Firstly, we generalize a semi-classical limit of open strings on D-branes in group manifolds. The limit gives rise to rigid open strings, whose dynamics can efficiently be described in terms of a matrix algebra.
Alekseev, Alekseev, Alekseev, Alekseev, Alekseev, Alekseev, Alvarez-Gaume, Balachandran, Behrend, Berezin, Bigatti, Bordemann, Cardy, Charles Jego, Chu, Coste, D'Appollonio, D'Appollonio, Davids, Davids, Douglas, Falcet, Felder, Felder, Figueroa-O'Farrill, Freidel, Gawedzki, Grosse, Hoppe, Hosomichi, Hou, Jan Troost, Jurco, Jurco, Karasev, Karasev, Kirillov, Kirillov, Landsman, Lieb, Liskova, Madore, Maldacena, McGreevy, Moore, Morariu, Morariu, Mukunda, Nielsen, Perelomov, Pierre Bieliavsky, Podles, Ponsot, Ponsot, Pradisi, Rawnsley, Rawnsley, Ribault, Ribault, Rieffel, Runkel, Schomerus, Seiberg, Sfetsos, Simon, Slater, Snyder, Taylor, Troost, Unterberger, Unterberger, Vilenkin, Vilenkin, Weinstein, Weinstein, Weinstein, Whipple, Whipple, Whipple, Wigner, Witten, Witten, Woodhouse, Zakrzewski   +83 more
core   +4 more sources

Simplification of the Spectral Analysis of the Volume Operator in Loop Quantum Gravity [PDF]

, 2004
The Volume Operator plays a crucial role in the definition of the quantum dynamics of Loop Quantum Gravity (LQG). Efficient calculations for dynamical problems of LQG can therefore be performed only if one has sufficient control over the volume spectrum.
Brunnemann, Johannes, Thiemann, Thomas
core   +3 more sources

Lie bialgebra contractions and quantum deformations of quasi-orthogonal algebras [PDF]

, 1994
Lie bialgebra contractions are introduced and classified. A non-degenerate coboundary bialgebra structure is implemented into all pseudo-orthogonal algebras $so(p,q)$ starting from the one corresponding to $so(N+1)$.
A. Ballesteros, Drinfeld V. G., F. J. Herranz, M. A. del Olmo, M. Santander, N. A. Gromov, Reshetikhin N. Y., Vaksman L. L.   +7 more
core   +2 more sources

Semiclassical Mechanics of the Wigner 6j-Symbol [PDF]

, 2011
The semiclassical mechanics of the Wigner 6j-symbol is examined from the standpoint of WKB theory for multidimensional, integrable systems, to explore the geometrical issues surrounding the Ponzano-Regge formula.
Abraham R, Alesci E Bianchi E Magliaro E Perini C, Aquilanti V, Arnold V I, Ashtekar A, Austin Hedeman, Baez J C, Baez J C, Barrett J W, Barrett J W, Barrett J W, Barrett J W Dowdall R J Fairbairn W J Gomes H Hellmann F, Biedenharn L C, Borodin K S, Brink D M, Brunnemann J Rideout D, Brunnemann J Rideout D, Carbone G, Chakrabarti A, Charles L, Crippen G M, Cvitanovich P, Ding Y Rovelli C, Edmonds A R, El Baz E, Freidel L, Goldstein H, Guillemin V, Gurau R, Hackett J, Haggard H M, Hal M Haggard, Kapovich M, Kapovich M, Kauffman L H, Kirillov A A, Liang Yu, Lindgren I, Major S A Seifert M D, Marsden J E, Martinez A, Messiah A, Minkowski H, Nadir Jeevanjee, Penrose R, Ponzano G, Robert G Littlejohn, Rovelli C, Sastry K R S, Schwinger J, Smolin L, Stedman G E, Taylor Y U Woodward C T, Van der Veen R, Varshalovich D A, Vincenzo Aquilanti, Whittaker E T, Wigner E P, Wigner E P, Woodhouse N M J, Yutsis A P   +60 more
core   +1 more source

The square-kagome quantum Heisenberg antiferromagnet at high magnetic fields: The localized-magnon paradigm and beyond [PDF]

, 2013
We consider the spin-1/2 antiferromagnetic Heisenberg model on the two-dimensional square-kagome lattice with almost dispersionless lowest magnon band. For a general exchange coupling geometry we elaborate low-energy effective Hamiltonians which emerge ...
Honecker A., Johannes Richter, Niggemann H., Niggemann H., Okamoto K., Oleg Derzhko, Olesia Krupnitska, Takano K., Taras Krokhmalskii, Čanová L.   +9 more
core   +2 more sources