Niels Obers
Publications
1) Extremal Black Hole Horizons.
By Jay Armas, Troels Harmark, Niels A. Obers.
[arXiv:1712.09364 [hep-th]].
2) Zooming in on AdS$_3$/CFT$_2$ near a BPS Bound.
By Jelle Hartong, Yang Lei, Niels A. Obers, Gerben Oling.
[arXiv:1712.05794 [hep-th]].
3) Homogeneous Nonrelativistic Geometries as Coset Spaces.
By Kevin T. Grosvenor, Jelle Hartong, Cynthia Keeler, Niels A. Obers.
[arXiv:1712.03980 [hep-th]].
4) Hydrodynamic Modes of Homogeneous and Isotropic Fluids.
By Jan de Boer, Jelle Hartong, Niels A. Obers, Watse Sybesma, Stefan Vandoren.
[arXiv:1710.06885 [hep-th]].
By Jan de Boer, Jelle Hartong, Niels A. Obers, Watse Sybesma, Stefan Vandoren.
[arXiv:1710.04708 [hep-th]].
6) Nonrelativistic strings and limits of the AdS/CFT correspondence.
By Troels Harmark, Jelle Hartong, Niels A. Obers.
[arXiv:1705.03535 [hep-th]].
Phys.Rev. D96 (2017) no.8, 086019.
7) Torsional Newton-Cartan Geometry from the Noether Procedure.
By Guido Festuccia, Dennis Hansen, Jelle Hartong, Niels A. Obers.
[arXiv:1607.01926 [hep-th]].
Phys.Rev. D94 (2016) no.10, 105023.
8) Symmetries and Couplings of Non-Relativistic Electrodynamics.
By Guido Festuccia, Dennis Hansen, Jelle Hartong, Niels A. Obers.
[arXiv:1607.01753 [hep-th]].
JHEP 1611 (2016) 037.
9) Lifshitz Hydrodynamics from Lifshitz Black Branes with Linear Momentum.
By Jelle Hartong, Niels A. Obers, Marco Sanchioni.
[arXiv:1606.09543 [hep-th]].
JHEP 1610 (2016) 120.
10) Forced Fluid Dynamics from Blackfolds in General Supergravity Backgrounds.
By Jay Armas, Jakob Gath, Vasilis Niarchos, Niels A. Obers, Andreas Vigand Pedersen.
[arXiv:1606.09644 [hep-th]].
JHEP 1610 (2016) 154.
11) Nonrelativistic Chern-Simons theories and three-dimensional Hořava-Lifshitz gravity.
By Jelle Hartong, Yang Lei, Niels A. Obers.
[arXiv:1604.08054 [hep-th]].
Phys.Rev. D94 (2016) no.6, 065027.
12) Gravitational Tension, Spacetime Pressure and Black Hole Volume.
By Jay Armas, Niels A. Obers, Marco Sanchioni.
[arXiv:1512.09106 [hep-th]].
JHEP 1609 (2016) 124.
13) Hořava-Lifshitz gravity from dynamical Newton-Cartan geometry.
By Jelle Hartong, Niels A. Obers.
[arXiv:1504.07461 [hep-th]].
JHEP 1507 (2015) 155.
14) Field Theory on Newton-Cartan Backgrounds and Symmetries of the Lifshitz Vacuum.
By Jelle Hartong, Elias Kiritsis, Niels A. Obers.
[arXiv:1502.00228 [hep-th]].
JHEP 1508 (2015) 006.
15) Schrödinger Invariance from Lifshitz Isometries in Holography and Field Theory.
By Jelle Hartong, Elias Kiritsis, Niels A. Obers.
[arXiv:1409.1522 [hep-th]].
Phys.Rev. D92 (2015) 066003.
16) Lifshitz space–times for Schrödinger holography.
By Jelle Hartong, Elias Kiritsis, Niels A. Obers.
[arXiv:1409.1519 [hep-th]].
10.1016/j.physletb.2015.05.010.
Phys.Lett. B746 (2015) 318-324.
17) Boundary Stress-Energy Tensor and Newton-Cartan Geometry in Lifshitz Holography.
By Morten H. Christensen, Jelle Hartong, Niels A. Obers, Blaise Rollier.
[arXiv:1311.6471 [hep-th]].
JHEP 1401 (2014) 057.
18) Torsional Newton-Cartan Geometry and Lifshitz Holography.
By Morten H. Christensen, Jelle Hartong, Niels A. Obers, Blaise Rollier.
[arXiv:1311.4794 [hep-th]].
Phys.Rev. D89 (2014) 061901.
19) Electroelasticity of Charged Black Branes.
By Jay Armas, Jakob Gath, Niels A. Obers.
[arXiv:1307.0504 [hep-th]].
JHEP 1310 (2013) 035.
20) Null-Wave Giant Gravitons from Thermal Spinning Brane Probes.
By Jay Armas, Niels A. Obers, Andreas Vigand Pedersen.
[arXiv:1306.2633 [hep-th]].
JHEP 1310 (2013) 109.
21) Holographic Models for Theories with Hyperscaling Violation.
By Jakob Gath, Jelle Hartong, Ricardo Monteiro, Niels A. Obers.
[arXiv:1212.3263 [hep-th]].
JHEP 1304 (2013) 159.
22) Relativistic Elasticity of Stationary Fluid Branes.
By Jay Armas, Niels A. Obers.
[arXiv:1210.5197 [hep-th]].
Phys.Rev. D87 (2013) no.4, 044058.
23) Black Branes as Piezoelectrics.
By Jay Armas, Jakob Gath, Niels A. Obers.
[arXiv:1209.2127 [hep-th]].
10.1103/PhysRevLett.109.241101.
Phys.Rev.Lett. 109 (2012) 241101.
By Jay Armas, Troels Harmark, Niels A. Obers, Marta Orselli, Andreas Vigand Pedersen.
[arXiv:1207.2789 [hep-th]].
JHEP 1211 (2012) 123.
25) Thermal string probes in AdS and finite temperature Wilson loops.
By Gianluca Grignani, Troels Harmark, Andrea Marini, Niels A. Obers, Marta Orselli.
[arXiv:1201.4862 [hep-th]].
JHEP 1206 (2012) 144.
26) The Young Modulus of Black Strings and the Fine Structure of Blackfolds.
By Jay Armas, Joan Camps, Troels Harmark, Niels A. Obers.
[arXiv:1110.4835 [hep-th]].
JHEP 1202 (2012) 110.
27) Nernst branes in gauged supergravity.
By Susanne Barisch, Gabriel Lopes Cardoso, Michael Haack, Suresh Nampuri, Niels A. Obers.
[arXiv:1108.0296 [hep-th]].
JHEP 1111 (2011) 090.
28) Blackfolds in Supergravity and String Theory.
By Roberto Emparan, Troels Harmark, Vasilis Niarchos, Niels A. Obers.
[arXiv:1106.4428 [hep-th]].
JHEP 1108 (2011) 154.
29) Thermodynamics of the hot BIon.
By Gianluca Grignani, Troels Harmark, Andrea Marini, Niels A. Obers, Marta Orselli.
[arXiv:1101.1297 [hep-th]].
10.1016/j.nuclphysb.2011.06.002.
Nucl.Phys. B851 (2011) 462-480.
30) Blackfolds in (Anti)-de Sitter Backgrounds.
By Jay Armas, Niels A. Obers.
[arXiv:1012.5081 [hep-th]].
Phys.Rev. D83 (2011) 084039.
By Gianluca Grignani, Troels Harmark, Andrea Marini, Niels A. Obers, Marta Orselli.
[arXiv:1012.1494 [hep-th]].
JHEP 1106 (2011) 058.
32) On-shell Recursion in String Theory.
By Rutger H. Boels, Daniele Marmiroli, Niels A. Obers.
[arXiv:1002.5029 [hep-th]].
JHEP 1010 (2010) 034.
33) New Horizons for Black Holes and Branes.
By Roberto Emparan, Troels Harmark, Vasilis Niarchos, Niels A. Obers.
[arXiv:0912.2352 [hep-th]].
JHEP 1004 (2010) 046.
34) Essentials of Blackfold Dynamics.
By Roberto Emparan, Troels Harmark, Vasilis Niarchos, Niels A. Obers.
[arXiv:0910.1601 [hep-th]].
JHEP 1003 (2010) 063.
35) World-Volume Effective Theory for Higher-Dimensional Black Holes.
By Roberto Emparan, Troels Harmark, Vasilis Niarchos, Niels A. Obers.
[arXiv:0902.0427 [hep-th]].
10.1103/PhysRevLett.102.191301.
Phys.Rev.Lett. 102 (2009) 191301.
36) Blackfold approach for higher-dimensional black holes.
By Roberto Emparan, Troels Harmark, Vasilis Niarchos, Niels A. Obers.
Acta Phys.Polon. B40 (2009) 3459-3506.
37) MHV, CSW and BCFW: Field theory structures in string theory amplitudes.
By Rutger Boels, Kasper J. Larsen, Niels A. Obers, Marcel Vonk.
[arXiv:0808.2598 [hep-th]].
10.1088/1126-6708/2008/11/015.
JHEP 0811 (2008) 015.
38) Black Holes in Higher-Dimensional Gravity.
By Niels A. Obers.
[arXiv:0802.0519 [hep-th]].
Lect.Notes Phys. 769 (2009) 211-258.
39) Phases of Thermal N=2 Quiver Gauge Theories.
By Kasper J. Larsen, Niels A. Obers.
[arXiv:0708.3199 [hep-th]].
10.1088/1126-6708/2008/01/057.
JHEP 0801 (2008) 057.
40) The Phase Structure of Higher-Dimensional Black Rings and Black Holes.
By Roberto Emparan, Troels Harmark, Vasilis Niarchos, Niels A. Obers, Maria J. Rodriguez.
[arXiv:0708.2181 [hep-th]].
10.1088/1126-6708/2007/10/110.
JHEP 0710 (2007) 110.
41) Multi-black hole configurations on the cylinder.
By Oscar J.C. Dias, Troels Harmark, Robert C. Myers, Niels A. Obers.
[arXiv:0706.3645 [hep-th]].
Phys.Rev. D76 (2007) 104025.
42) Factorization of Seiberg-Witten Curves with Fundamental Matter.
By Romuald A. Janik, Niels A. Obers, Peter B. Ronne.
[hep-th/0701087].
10.1088/1126-6708/2007/05/080.
JHEP 0705 (2007) 080.
43) Entropy of Three-Charge Black Holes on a Circle.
By Troels Harmark, Kristjan R. Kristjansson, Niels A. Obers, Peter B. Ronne.
[hep-th/0701070].
Fortsch.Phys. 55 (2007) 748-753.
44) Instabilities of black strings and branes.
By Troels Harmark, Vasilis Niarchos, Niels A. Obers.
[hep-th/0701022].
Class.Quant.Grav. 24 (2007) R1-R90.
45) Three-charge black holes on a circle.
By Troels Harmark, Kristjan R. Kristjansson, Niels A. Obers, Peter B. Ronne.
[hep-th/0606246].
10.1088/1126-6708/2007/01/023.
JHEP 0701 (2007) 023.
46) Stable Non-Supersymmetric Vacua in the Moduli Space of Non-Critical Superstrings.
By Troels Harmark, Vasilis Niarchos, Niels A. Obers.
[hep-th/0605192].
10.1016/j.nuclphysb.2006.09.020.
Nucl.Phys. B759 (2006) 20-49.
47) Thermodynamics of the near-extremal NS5-brane.
By Troels Harmark, Niels A. Obers.
[hep-th/0510098].
10.1016/j.nuclphysb.2006.01.045.
Nucl.Phys. B742 (2006) 41-58.
48) Instabilities of near-extremal smeared branes and the correlated stability conjecture.
By Troels Harmark, Vasilis Niarchos, Niels A. Obers.
[hep-th/0509011].
10.1088/1126-6708/2005/10/045.
JHEP 0510 (2005) 045.
49) New phases of thermal SYM and LST from Kaluza-Klein black holes.
By Troels Harmark, Niels A. Obers.
[hep-th/0503021].
10.1002/prop.200510215, 10.1002/prop.200410214.
Fortsch.Phys. 53 (2005) 536-541, Fortsch.Phys. 53 (2005) 900-905.
50) Phases of Kaluza-Klein black holes: A Brief review.
By Troels Harmark, Niels A. Obers.
[hep-th/0503020].
By M. Bertolini, Y. Demasure, P. Di Vecchia, C. Kristjansen, P. Merlatti, N. Obers.
Class.Quant.Grav. 21 (2004) pp.S1265-S1573.
52) New phases of near-extremal branes on a circle.
By Troels Harmark, Niels A. Obers.
[hep-th/0407094].
10.1088/1126-6708/2004/09/022.
JHEP 0409 (2004) 022.
53) Sequences of bubbles and holes: New phases of Kaluza-Klein black holes.
By Henriette Elvang, Troels Harmark, Niels A. Obers.
[hep-th/0407050].
10.1088/1126-6708/2005/01/003.
JHEP 0501 (2005) 003.
54) Phases of Kaluza-Klein black holes.
By H. Elvang, N. Obers, T. Harmark.
Class.Quant.Grav. 21 (2004) S1509-S1516.
55) General definition of gravitational tension.
By Troels Harmark, Niels A. Obers.
[hep-th/0403103].
10.1088/1126-6708/2004/05/043.
JHEP 0405 (2004) 043.
56) Phase structure of black holes and strings on cylinders.
By Troels Harmark, Niels A. Obers.
[hep-th/0309230].
10.1016/j.nuclphysb.2004.02.022.
Nucl.Phys. B684 (2004) 183-208.
57) New phase diagram for black holes and strings on cylinders.
By Troels Harmark, Niels A. Obers.
[hep-th/0309116].
Class.Quant.Grav. 21 (2004) 1709.
58) Black holes and black strings on cylinders.
By T. Harmark, Niels A. Obers.
[hep-th/0301020].
Fortsch.Phys. 51 (2003) 793-798.
59) SO(N) superpotential, Seiberg-Witten curves and loop equations.
By R.A. Janik, N.A. Obers.
[hep-th/0212069].
10.1016/S0370-2693(02)03232-X.
Phys.Lett. B553 (2003) 309-316.
60) The Outer automorphic WZW orbifolds on so(2n), including five triality orbifolds on so(8).
By O. Ganor, M.B. Halpern, C. Helfgott, N.A. Obers.
[hep-th/0211003].
10.1088/1126-6708/2002/12/019.
JHEP 0212 (2002) 019.
61) Gauge theory description of compactified pp waves.
By M. Bertolini, J. de Boer, T. Harmark, Emiliano Imeroni, N.A. Obers.
[hep-th/0209201].
10.1088/1126-6708/2003/01/016.
JHEP 0301 (2003) 016.
By Troels Harmark, Niels A. Obers.
[hep-th/0204047].
10.1088/1126-6708/2002/05/032.
JHEP 0205 (2002) 032.
63) Nonextremal fractional branes.
By M. Bertolini, T. Harmark, N.A. Obers, A. Westerberg.
[hep-th/0203064].
10.1016/S0550-3213(02)00237-7.
Nucl.Phys. B632 (2002) 257-282.
By M.B. Halpern, N.A. Obers.
[hep-th/0203056].
Int.J.Mod.Phys. A17 (2002) 3897-3962.
65) The Operator algebra and twisted KZ equations of WZW orbifolds.
By J. de Boer, M.B. Halpern, N.A. Obers.
[hep-th/0105305].
10.1088/1126-6708/2001/10/011.
JHEP 0110 (2001) 011.
66) Exact thresholds and instanton effects in string theory.
By N.A. Obers, B. Pioline.
[hep-th/0101122].
10.1002/1521-3978(200105)49:4/6<359::AID-PROP359>3.3.CO;2-U.
Fortsch.Phys. 49 (2001) 359-375.
67) Exact thresholds and instanton effects in D = 3 string theories.
By Niels A. Obers, Boris Pioline.
[hep-th/0006088].
10.1088/1126-6708/2000/07/003.
JHEP 0007 (2000) 003.
68) Hagedorn behavior of little string theories.
By T. Harmark, N.A. Obers.
[hep-th/0010169].
69) Hagedorn behavior of little string theory from string corrections to NS5-branes.
By T. Harmark, N.A. Obers.
[hep-th/0005021].
10.1016/S0370-2693(00)00649-3.
Phys.Lett. B485 (2000) 285-292.
70) Heterotic / type II triality and instantons on K(3).
By Elias Kiritsis, Niels A. Obers, Boris Pioline.
[hep-th/0001083].
10.1088/1126-6708/2000/01/029.
JHEP 0001 (2000) 029.
71) Phase structure of noncommutative field theories and spinning brane bound states.
By T. Harmark, N.A. Obers.
[hep-th/9911169].
10.1088/1126-6708/2000/03/024.
JHEP 0003 (2000) 024.
72) Thermodynamics of spinning branes and their dual field theories.
By T. Harmark, N.A. Obers.
[hep-th/9910036].
10.1088/1126-6708/2000/01/008.
JHEP 0001 (2000) 008.
73) Thermodynamics of field theories from spinning branes.
By T. Harmark, N.A. Obers.
[hep-th/0002250].
PoS tmr99 (1999) 038.
74) Eisenstein series in string theory.
By Niels A. Obers, Boris Pioline.
[hep-th/9910115].
Class.Quant.Grav. 17 (2000) 1215-1224.
75) Eisenstein series and string thresholds.
By N.A. Obers, B. Pioline.
[hep-th/9903113].
Commun.Math.Phys. 209 (2000) 275-324.
By N.A. Obers, B. Pioline.
[hep-th/9809039].
10.1016/S0370-1573(99)00004-6.
Phys.Rept. 318 (1999) 113-225.
77) U duality and M theory, an algebraic approach.
By Niels A. Obers, Boris Pioline.
[hep-th/9812139].
PoS corfu98 (1998) 053, Lect.Notes Phys. 525 (1999) 424.
78) M theory and U duality on T**d with gauge backgrounds.
By N.A. Obers, B. Pioline, E. Rabinovici.
[hep-th/9712084].
10.1016/S0550-3213(98)00264-8.
Nucl.Phys. B525 (1998) 163-181.
79) Heterotic type I duality in D < 10-dimensions, threshold corrections and D instantons.
By E. Kiritsis, N.A. Obers.
[hep-th/9709058].
10.1088/1126-6708/1997/10/004.
JHEP 9710 (1997) 004.
80) R**2 corrections and nonperturbative dualities of N=4 string ground states.
By A. Gregori, E. Kiritsis, C. Kounnas, N.A. Obers, P.M. Petropoulos, B. Pioline.
[hep-th/9708062].
10.1016/S0550-3213(98)81020-1, 10.1016/S0550-3213(97)00635-4.
Nucl.Phys. B510 (1998) 423-476.
81) Heterotic / type I duality and D-brane instantons.
By C. Bachas, C. Fabre, E. Kiritsis, N.A. Obers, Pierre Vanhove.
[hep-th/9707126].
10.1016/S0550-3213(97)00639-1.
Nucl.Phys. B509 (1998) 33-52.
82) New semiclassical nonAbelian vertex operators for chiral and nonchiral WZW theory.
By M.B. Halpern, N.A. Obers.
[hep-th/9610081].
Int.J.Mod.Phys. A12 (1997) 4317-4355, Int.J.Mod.Phys. A12 (1997) 9700235.
83) Semiclassical blocks and correlators in rational and irrational conformal field theory.
By M.B. Halpern, N.A. Obers.
[hep-th/9601070].
Int.J.Mod.Phys. A11 (1996) 4837-4896.
84) Irrational conformal field theory.
By M.B. Halpern, E. Kiritsis, N.A. Obers, K. Clubok.
[hep-th/9501144].
Phys.Rept. 265 (1996) 1-138.
85) A New duality symmetry in string theory.
By Elias Kiritsis, N.A. Obers.
[hep-th/9406082].
Phys.Lett. B334 (1994) 67-71.
86) Plane gravitational waves in string theory.
By Ignatios Antoniadis, N.A. Obers.
[hep-th/9403191].
Nucl.Phys. B423 (1994) 639-660.
87) Flat connections and nonlocal conserved quantities in irrational conformal field theory.
By M.B. Halpern, N.A. Obers.
[hep-th/9312050].
J.Math.Phys. 36 (1995) 1080-1110.
88) Solving the Ward identities of irrational conformal field theory.
By M.B. Halpern, N.A. Obers.
[hep-th/9305072].
Int.J.Mod.Phys. A9 (1994) 419-460.
89) Ward identities for affine Virasoro correlators.
By M.B. Halpern, N.A. Obers.
[hep-th/9207071].
Int.J.Mod.Phys. A9 (1994) 265-312.
90) The Lie h invariant conformal field theories and the Lie h invariant graphs.
By M.B. Halpern, E.B. Kiritsis, N.A. Obers.
[hep-th/9110001].
Int.J.Mod.Phys. A7S1A (1992) 339-375.
91) Generalized graph theory on Lie g and applications in conformal field theory.
By M.B. Halpern, N.A. Obers.
J.Math.Phys. 33 (1992) 3274-3295.
92) Generalized graphs and unitary irrational central charge in the superconformal master equation.
By M.B. Halpern, N.A. Obers.
J.Math.Phys. 32 (1991) 3231-3240.
93) Superconformal constructions on two-dimensional simplicial complexes.
By M.B. Halpern, N.A. Obers.
Int.J.Mod.Phys. A7 (1992) 3065-3082.
94) New superconformal constructions on triangle free graphs.
By M.B. Halpern, N.A. Obers.
Int.J.Mod.Phys. A7 (1992) 7263-7286.
95) Graph theory and the Virasoro master equation.
By Niels A.J. Obers.
96) Magic bases, metric ansatze and generalized graph theories in the Virasoro master equation.
By M.B. Halpern, N.A. Obers.
Annals Phys. 212 (1991) 28-52.
97) The Superconformal master equation.
By A. Giveon, M.B. Halpern, E.B. Kiritsis, N.A. Obers.
Int.J.Mod.Phys. A7 (1992) 947-972.
98) Exact C function and C theorem on affine Virasoro space.
By A. Giveon, M.B. Halpern, E.B. Kiritsis, N.A. Obers.
Nucl.Phys. B357 (1991) 655-690.
99) Graph theory, SO(n) current algebra and the Virasoro master equation.
By M.B. Halpern, N.A. Obers.
Commun.Math.Phys. 138 (1991) 63-106.
100) Unitary Irrational Central Charge on Compact $G$: High Level Analysis and SU(3) Basic.
By M.B. Halpern, N.A. Obers.
Nucl.Phys. B345 (1990) 607-644.
101) UNITARY IRRATIONAL CENTRAL CHARGE ON COMPACT g. 1. (SIMPLY LACED g-x)q=>2.
By M.B. Halpern, N.A. Obers.
Int.J.Mod.Phys. A6 (1991) 1835-1857.
102) New Unitary Affine Virasoro Constructions.
By M.B. Halpern, E. Kiritsis, N.A. Obers, M. Porrati, Jonathan P. Yamron.
Int.J.Mod.Phys. A5 (1990) 2275.
