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1.
Quantum groups have some peculiar properties is two dimensions. We formulate conditions sufficient for the product of two quantum matrices (with not necessarily the same values of deformation parameters) to be a quantum matrix again. This is then used to study the powers and exponential form of matrices fromGL p,q (2), generalising this way properties ofGL q (2)-matrices. 相似文献
2.
3.
GONG Renshan 《理论物理通讯》1998,29(2):303-308
On a one-dimensional lattice with a geometric sequence spacing, the Hermitian conjugation of a (p, q)-derivative operator is discussed by means of (p, q)-integration. Then a (p, q)-deformation of both the Heisenberg algebra for the canonical coordinates and the Heisen berg-Weyl algebra for the harmonic oscillator is presented. It is shown that although in the algebraic aspect the (p, q)-deformation discussed here is identical with 9-deformation given by Truong, the (p, q)-deformed SchrGdinger picture is in fact different from the q-deformed one. 相似文献
4.
5.
WANG Na WU Ke ZHANG Bo 《理论物理通讯》2007,48(3):415-424
The representation η(P, q) of spin group Spin(p, q) in any dimensional space is given by induction, and the relation between two representations, which are obtained in two kinds of inductions from Spin(p, q) to Spin(p + 1, q + 1) are studied. 相似文献
6.
A geometric construction of a certain singular unitary representation ofSO
e(p,q), withp+q even is given. The representation is realized geometrically as the kernel of aSO
e(p,q)-invariant operator on a space of sections over a homogeneous space forSO
e(p,q). TheK-structure of these representations is elucidated and we demonstrate their unitarity by explicitly writing down anso(p,q) positive definite hermitian form. Finally, we demonstrate that the annihilator inU[g] of this representation is the Joseph ideal, which is the maximal primitive ideal associated with the minimal coadjoint orbit. 相似文献
7.
A. Ghose Choudhury A. Roy Chowdhury 《International Journal of Theoretical Physics》1996,35(8):1699-1708
Intertwining relations for the quantumR-matrix of theSU
p,q
(2) invariant spin chain are obtained and the corresponding face model is deduced. An important difference is seen to arise
due to the asymmetry generated by the parametersp andq, which leads to a asymmetric face model. An algebraic Bethe ansatz is set up and solved with the help of these intertwining
vectors. 相似文献
8.
The dually conjugate Hopf algebrasFun p,q (R) andU p,q (R) associated with the two-parametric (p,q)-Alexander-Conway solution (R) of the Yang-Baxter equation are studied. Using the Hopf duality construction, the full Hopf structure of the quasitriangular enveloping algebraU p,q (R) is extracted. The universal ?-matrix forsFun p,q (R) is derived. While expressing an arbitrary group element of the quantum group characterized by the noncommuting parameters in a representation independent way, the ?-matrix generalizes the familiar exponential relation between a Lie group and its Lie algebra. The universal ?-matrix and the FRT matrix generators,L (±), forU p,q (R) are derived from the ?-matrix. 相似文献
9.
In this paper we classify all the irreducible super-unitary representations ofsu(p,q/n), which can be integrated up to a unitary representation ofS(U(p,q)×U(n)), a Lie group corresponding to the even part ofsu(p,q/n). Note that a real form of the Lie superalgebrasl(m/n;) which has non-trivial superunitary representations is of the formsu(p,q/n)(p+q=m) orsu(m/r,s)(r+s=n). Moreover, we give an explicit realization for each irreducible super-unitary representation, using the oscillator representation of an orthosymplectic Lie superalgebra. 相似文献
10.
For the quantum groupGL
p,q
(2) and the corresponding quantum algebraU
p,q
(gl(2)) Fronsdal and Galindo [Lett. Math. Phys.27 (1993) 59] explicitly constructed the so-called universalT-matrix. In a previous paper [J. Phys. A28 (1995) 2819] we showed how this universalT-matrix can be used to exponentiate representations from the quantum algebra to get representations (left comodules) for the quantum group. Here, further properties of the universalT-matrix are illustrated. In particular, it is shown how to obtain comodules of the quantum algebra by exponentiating modules of the quantum group. Also the relation with the universalR-matrix is discussed.Presented at the 4th International Colloquium Quantum Groups and Integrable Systems, Prague, 22–24 June 1995. 相似文献
11.
Integrable equations of the form q
t
=L
1(x,t,q,q
x
,q
xx
)q
xxx
+L
2(x,t,q,q
x
,q
xx
) are considered using linearization. A new type of integrable equations which are the generalization of the integrable equations of Fokas and Ibragimov and Shabat are given. 相似文献
12.
We calculate a second cohomology class which determines a deformation quantization up to equivalence for a deformation quantization with separation of variables on a Kähler manifold, following P. Deligne. 相似文献
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14.
《Journal of Nonlinear Mathematical Physics》2013,20(2):114-119
Abstract A (p, q)-analog of two-dimensional conformally invariant field theory based on the quantum algebra Upq (su(1, 1)) is proposed. The representation of the algebra Upq (su(1, 1)) on the space of quasi-primary fields is given. The (p, q)-deformed Ward identities of conformal field theory are defined. The two- and three-point correlation functions of quasi-primary fields are calculated. 相似文献
15.
A quantum algebraU
p, q (,H,X
±) associated with a nonstandardR-matrix with two deformation parameters (p, q) is studied and, in particular, its universal -matrix is derived using Reshetikhin's method. Explicit construction of the (p, q)-dependent nonstandardR-matrix is obtained through a coloured generalized boson realization of the universal -matrix of the standardU
p, q(gl(2)) corresponding to a nongeneric case. General finite dimensional coloured representation of the universal -matrix ofU
p, q(gl(2)) is also derived. This representation, in nongeneric cases, becomes a source for various (p, q)-dependent nonstandardR-matrices. Superization ofU
p, q(,H,X
±) leads to the super-Hopf algebraU
p, q(gl(1/1)). A contraction procedure then yields a (p, q)-deformed super-Heisenberg algebraU
p, q(sh(1)) and its universal -matrix. 相似文献
16.
J. A. de Wet 《International Journal of Theoretical Physics》1994,33(9):1841-1859
It is easy to show that the symmetry groups governing a system ofZ protons andN neutrons areSO(p+q) andO(p), wherep, q are related toZ, N and the symmetry groups are transitive on a Grassmann manifoldG
p,q. In this paper the general representations ofSO(p+q) andO(p) are found and used to describe the geodesics onG
p,q for the nuclear manifolds of the neutron rich-elements8,9Li. 相似文献
17.
18.
A perturbation approach for the calculation of (p, 2p) angular correlations for slightly deformed nuclei is developed using the formalism of the distorted wave t-matrix approximation (DWTA) in the static limit where approximations that incorporate absorption and focussing effects are used for the spin-orbit independent optical-model waves. Using a finite-range off-shell t-matrix that fits p-p scattering at 90° to approximate the p-p interaction inside the nucleus, a zero-order calculation is performed and normalized to 19F(p, 2p)18O angular correlation data at 42.7 MeV. A rms study is undertaken in order to parametrize the bound-state and the sensitivity of the shape of the angular correlation to the rms value is observed. The deformation of the bound-state is introduced using normalized perturbation theory and calculations with various values of the deformation parameter β for prolate and oblate deformations are performed and the results are compared. The shape of the (p, 2p) angular correlation is shown to be highly sensitive to the degree of deformation and is consistent with the shape dependence of the correlation to the rms value of the bound-state wave function. 相似文献
19.
S. A. Harbison R. J. Griffiths F. G. Kingston
A. R. Johnston
G. T. A. Squier 《Nuclear Physics A》1969,130(3):513-526The energy spectra of deuterons, tritons and 3He particles from the reactions 3He(p, d)2p, 4He(p, t)2p and 4He(p, 3He)pn have been measured at angles between 6° and 60° lab. The 3He(p, d)2p reaction was studied at both 30.5 and 49.5 MeV incident proton energies, while the other two reactions were studied at 49.5 MeV only. The energy spectra are compared with calculations based on the Watson-Migdal model of final-state interactions. 相似文献
20.
The 3He spin analysing power of hydrogen (protons) has been measured at a c.m. energy of 20 MeV at 14 c.m. angles from 40° to 160°. The measurement of 3He target polarization was calibrated by measuring the 3He spin analysing power of 4He at an energy and angle where it was ?1.00. The proton-3He differential elastic scattering cross section is also reported at a c.m. energy of 20.0 MeV for 36 c.m. angles from 20° to 170°. 相似文献