Ubriaco, Marcelo R

• "Quantum deformations of quantum mechanics" MPLA 8 (1993) 89-96 [>qm-deform].

Uffink, Jos

• w J Hilgevoord "Interference and distinguishability in quantum mechanics" PhyB 151 (1988) 309, qp/9904003 [>uncertainty].

Uggla, Claes @ A Ashtekar

• w K Rosquist & R Jantzen "Geometrizing the dynamics of Bianchi cosmology" PRD 42 (1990) 404-418 [>chaos-bianchi; *].
• w M Bradley & M Marklund "Classifying Einstein's field equations, with applications to cosmology and astrophysics" CQG 12 (1995) 2525-2548 [>einstein].

Uglum, John

• "Quantum cosmology of R × S² × S¹" PRD 46 (1992) 4365-4372 [>minisuperspace].

Uhlenbeck, George Eugene @ O Laporte, A Pais

• w L S Ornstein "On the theory of the Brownian motion" PR 36 (1930) 823-841 [>brownian].

Uhlenbeck, Karen K @ D Freed, L M & R J Sibner

• "Connections with L^p-bounds on curvature" CMP 83 (1982) 31-42 [>gt-ym].
• "Conservation laws and their application to global differential geometry" in Srinivasan 83 [>conservation].

Ulam, Stanislaw M @ E Fermi

• Adventures of a Mathematician Scribner's 1976 [>math].

Ulfbeck, Ole @ A Bohr

Ullman, Jeffrey D @ J E Hopcroft

Ulmer, M

• ed 13th Texas Symposium on Relativistic Astrophysics WS 1987 [@Hartle].

Umezawa, Hiroomi @ H Chu, I Hardman

• w G Vitiello Quantum Mechanics Bibliopolis [>qm].

Ungar, Abraham A @ s.a. comment to Soodak & Tiersten AJP(93).

• "The abstract Lorentz transformation group" AJP 60 (1992) 815-828 [s.a. JMP 35 (1994) 1408-1426 and 1881-1993 [>lorentz].

Unnikrishnan, C S

• "Naked singularities in spherically symmetric gravitational collapse: A critique" GRG 26 (1994) 655-662; s.a. reply Joshi & Singh GRG 27 (1995) 921-932 [>censorship].

Unruh, William G @ Y Aharonov, K Heiderich, G F Mazenko, J Oppenheim, M J Radzikowski

• "Separability of the neutrino equations in a Kerr background" PRL 31 (1973) 1265-1267 [>dirac].
• "Second quantization in the Kerr metric" PRD 10 (1974) 3194-3205 [>qft-cst-bkgds].
• "Notes on black hole evaporation" PRD 14 (1976) 870-892 [>qft-cst, bh-rad, spherical; *].
• "Origin of the parturbations in black hole evaporation" PRD 15 (1977) 365-369 [>bh-rad].
• "Particle detectors and black hole evaporation" in Papagiannis 77, 186-190.
• "Experimental black hole evaporation?" PRL 46 (1981) 1351 [>bh-analog].
• w R M Wald "Acceleration radiation and the generalized second law of thermodynamics" PRD 25 (1982) 942-958; correction Radzikowski & Unruh PRD(88) [>qft-curv, bh-laws; *].
• "Steps towards a quantum theory of gravity" in Christensen 84, 234-242 [>gr-semi].
• w R M Wald "What happens when an accelerating observer detects a Rindler particle" PRD 29 (1984) 1047-1056 [>qft-phen-cst; *].
• "Time and quantum gravity" in Markov et al 88, 252-268.
• w G W Semenoff, eds The Early Universe (Vancouver 08.1986, NATO C219) Reidel 1988 [@Turner].
• "Time and quantum gravity" IJTP 28 (1989) 1181-1193 [>qg-time; *].
• "Unimodular theory of canonical quantum gravity" PRD 40 (1989) 1048-1052 [>unimodular, time; *].
• "Quantum coherence, wormholes, and the cosmological constant" PRD 40 (1989) 1053-1063 [>qg-phen].
• w G Hayward, W Israel & D McManus "Cosmic-string loops are straight" PRL 62 (1989) 2897-2900 [>def-strings].
• w R M Wald "Time and the interpretation of canonical quantum gravity" PRD 40 (1989) 2598-2614 [>qg-time, unimodular; *].
• w N Weiss "Relationship between the usual formulation of a massless scalar field and its formulation in terms of a two-form potential" PRD 40 (1989) 1064-1070 [>ft-scalar].
• w W H Zurek "Reduction of a wave packet in quantum Brownian motion" PRD 40 (1989) 1071-1094 [>decoherence].
• "Particles and fields" in Audretsch & de Sabbata 90 [*].
• "Loss of quantum coherence for a damped oscillator" in Ashtekar & Stachel 91, 67-74.
• "No time and quantum gravity" in Markov et al 91, 44-59; in Mann & Wesson 91, 260-275 [*].
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• w P Newbury "Solution to 2+1 gravity in dreibein formalism" gq/9307029, IJMPD 3 (1994) 131-137 [>gr-3D].
• "Time, gravity and quantum mechanics" gq/9312027, in Savitt 94 [>qg-time].
• "Maintaining coherence in quantum computers" ht/9406058 [>tech-qm].
• "Dumb holes and the effect of high frequencies on black hole evaporation" gq/9409008, PRD 51 (1995) 2827-2838 [>bh].
• "Varieties of quantum measurement" ht/9410168 (Baltimore 06.1994) [>meas-types].
• w R M Wald "Evolution laws taking pures states to mixed states in quantum field theory" ht/9503024, PRD 52 (1995) 2176-2182 [>decoherence].
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• "Cosmological long wavelength perturbations" ap/9802323 [>cosm-pert].
• "On the Hawking-Turok solution to the open universe wave function" gq/9803050 [>infl].
• "Acceleration radiation for orbiting electrons" ht/9804158, PRP 307 (1998) 163-171 [>rad].

Unsöld, Albrecht

• w R B Baschek The New Cosmos 3rd ed, SV 1983 [>astr; concise, observ].
• The New Cosmos: An Introduction to Astronomy and Astrophysics 5th ed, SV 2001.

Unti, Theodore W J @ E T Newman

Upadhya, Peush @ C Rovelli

Upfal, Eli @ M Mitzenmacher

Urani, John @ G Gale

Urbach, Peter @ C Howson

Urbantke, Helmut K @ H Rumpf, R U Sexl

• "Hyperspin manifolds and the space problem of Weyl" IJTP 28 (1989) 1233-1235 [>Hyperspin, Raumproblem].
• "Local differential geometry of null curves in conformally flat spacetime" JMP 30 (1989) 2238-2245 [>geodesic, Null curves].
• "Physical holonomy, Thomas precession, and Clifford algebra" AJP 58 (1990) 747-750; erratum 59 (1991) 1150-1151 [>Thomas Prec].
• "Two-level systems: States, phases, and holonomy" AJP 59 (1991) 503-509 [>qm-systems].

Urrutia, Jorge @ J B Sidney

Urrutia, Luís F @ R Gambini, H Morales

• "Towards a loop representation of connection theories defined over a super Lie algebra" ht/9609001-in [>sugra].

Usher, M @ L P Horwitz

Ushveridze, Alexander G

• (Quasi-integrable system) SJPP 20 (1989) 504 [>qm-systems].
• Quasi-Exactly Solvable Models in Quantum Mechanics IOP 1994 [>qm].

Usikov, Daniel Alekseevich @ R Z Sagdeev, G M Zaslavskii

Usseglio-Tomasset, Stefano @ F de Felice

Utiyama, Ryoyu

• "Invariant theoretical interpretation of interaction" PR 101 (1956) 1597-1607 [>Gauge Gravity, gt-ym-types; <; *].
• w B DeWitt "Renormalization of a classical gravitational field interacting with quantized matter fields" JMP 3 (1962) 608-618 [>qg-mod].

Uttley, W J @ F H J Cornish

Uwadia, Firdaus E

• w R E Kalaba "A new perspective on constrained motion" PRS A439 (1992) 407-410; comments Bucy PRS(94) [>constr].

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