nLab Nicholas Warner

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Selected writings

On coset spaces (homogeneous spaces) and their Maurer-Cartan forms in application to first-order formulation of (super-)gravity:

• Leonardo Castellani, L. J. Romans, Nicholas P. Warner, Symmetries of coset spaces and Kaluza-Klein supergravity, Annals of Physics 157 2 (1984) 394-407 [doi:10.1016/0003-4916(84)90066-6]

On gauged D=7 supergravity:

• M. Pernici, Krzysztof Pilch, Peter van Nieuwenhuizen, Nicholas Warner, Noncompact Gauging and Critical Points of Maximal Supergravity in Seven Dimensions, Nucl. Phys. B249 (1985) 381 (doi:10.1016/0550-3213(85)90046-X>doi:10.1016/0550-3213(85)90046-X)

On the partition function of the superstring (heterotic string and type II string) as a modular form with values in the Chern character of the background field strengths (“character-valued partition function”, a little later called the elliptic genus/Witten genus) and relation to Green-Schwarz anomaly cancellation:

• A. N. Schellekens, Nicholas P. Warner, Anomalies, characters and strings, Nuclear Physics B Volume 287, 1987, Pages 317-361 (doi:10.1016/0550-3213(87)90108-8)

• A. N. Schellekens, Nicholas P. Warner, Anomalies and modular invariance in string theory, Physics Letters B 177 (3-4), 317-323, 1986 (doi:10.1016/0370-2693(86)90760-4)

• Wolfgang Lerche, Bengt Nilsson, A. N. Schellekens, Nicholas P. Warner, Anomaly cancelling terms from the elliptic genus, Nuclear Physics B Volume 299, Issue 1, 28 March 1988, Pages 91-116 (doi:10.1016/0550-3213(88)90468-3)

On supersymmetry and G-structure (notably Spin(7)-structure in M-theory on 8-manifolds):

• Chris Isham, Christopher Pope, Nowhere Vanishing Spinors and Topological Obstructions to the Equivalence of the NSR and GS Superstrings, Class. Quant. Grav. 5 (1988) 257 (spire:251240, doi:10.1088/0264-9381/5/2/006)

• Chris Isham, Christopher Pope, Nicholas Warner, Nowhere-vanishing spinors and triality rotations in 8-manifolds, Classical and Quantum Gravity, Volume 5, Number 10, 1988 (cds:185144, doi:10.1088/0264-9381/5/10/009)

On Landau-Ginzburg models:

• Cumrun Vafa, Nicholas Warner, Catastrophes and the Classification of Conformal Theories, Phys.Lett. B218 (1989) 51 (doi:10.1016/0370-2693(89)90473-5)

On gauged D=5 supergravity:

• Murat Günaydin, L. J. Romans and Nicholas Warner, Gauged $N = 8$ Supergravity in Five Dimensions, Phys. Lett. 154B, (1985) 268 (spire:207663, doi:10.1016/0370-2693(85)90361-2)

• Murat Günaydin, L. J. Romans and Nicholas Warner, Compact and Non–Compact Gauged Supergravity Theories in Five Dimensions, Nucl. Phys. B272 (1986) 598 (spire:219727, doi:10.1016/0550-3213(86)90237-3)

On E-strings as M5-branes wrapped on a half K3?:

• J. A. Minahan, D. Nemeschansky, Nicholas Warner, Partition Functions for BPS States of the Non-Critical $E_8$ String, Adv. Theor. Math. Phys.1:167-183, 1998 (arXiv:hep-th/9707149)

• J. A. Minahan, D. Nemeschansky, Cumrun Vafa, Nicholas Warner, E-Strings and $N=4$ Topological Yang-Mills Theories, Nucl. Phys. B527 (1998) 581-623 (arXiv:hep-th/9802168)

On the Myers effect in M-theory for M2-branes polarizing into M5-branes of fuzzy 3-sphere-shape, with emphasis on the role of the Page charge/Hopf WZ term:

• Iosif Bena, Nicholas Warner, A harmonic family of dielectric flow solutions with maximal supersymmetry, JHEP 0412:021, 2004 (arXiv:hep-th/0406145)

• Krzysztof Pilch, Alexander Tyukov, Nicholas Warner, Flowing to Higher Dimensions: A New Strongly-Coupled Phase on M2 Branes, JHEP11 (2015) 170 (arXiv:1506.01045)

On non-uniqueness of black rings:

• Iosif Bena, Simon Ross, Nicholas Warner, Coiffured Black Rings, Class.Quant.Grav. 31 (2014) 165015 (arXiv:1405.5217)

On AdS-CFT dual type II supergravity-solutions corresponding to D1-D5-P bound states (“superstrata”):

• Iosif Bena, Stefano Giusto, Rodolfo Russo, Masaki Shigemori, Nicholas P. Warner, Habemus Superstratum! A constructive proof of the existence of superstrata, JHEP 1505 (2015) 110 [arXiv:1503.01463]

and the non-supersymmetric generalization via AdS3-CFT2 duality (“microstrata”):

• Bogdan Ganchev, Anthony Houppe, Nicholas P. Warner, Q-Balls Meet Fuzzballs: Non-BPS Microstate Geometries, J. High Energ. Phys. 2021 28 (2021)

  [arXiv:2107.09677]

• Bogdan Ganchev, Stefano Giusto, Anthony Houppe, Rodolfo Russo, $AdS_3$ holography for non-BPS geometries, European Physical Journal C 82 217 (2022)

  [https://arxiv.org/abs/2112.03287, doi:10.1140/epjc/s10052-022-10133-2]

On (in-)stability of non-supersymmetric AdS vacua in string theory:

• Iosif Bena, Krzysztof Pilch, Nicholas Warner, Brane-Jet Instabilities, J. High Energ. Phys. 2020, 91 (2020) (arXiv:2003.02851)

On M2-M5-brane bound states:

• Iosif Bena, Anthony Houppe, Dimitrios Toulikas, Nicholas P. Warner, Maze Topiary in Supergravity [arXiv:2312.02286]

• Iosif Bena, Soumangsu Chakraborty, Dimitrios Toulikas, Nicholas P. Warner, The M2-M5 Mohawk [arXiv:2407.01665]

category: people