# Publications

*Curvature of quaternionic skew-Hermitian manifolds and bundle constructions* (with Ioannis Chrysikos, Jan Gregorovic),
arXiv:2404.05463 (math.DG)
*Symmetries of one-loop deformed q-map spaces* (with Alejandro Gil-Garcia, Danu Thung),
arXiv:2402.16178 (math.DG)
*Classification of odd generalized Einstein metrics on 3-dimensional Lie
groups* (with L. David),
arXiv:2311.00380 (math.DG)
*Compact locally conformally pseudo-Kähler manifolds with essential conformal transformations* (with T. Leistner),
arXiv:2309.11184 (math.DG)
*S-duality and the universal isometries of instanton corrected q-map
spaces* (with I. Tulli), Comm. Math. Phys. 2024
https://doi.org/10.1007/s00220-024-04935-6
*A class of locally inhomogeneous complete quaternionic Kähler manifolds* (with A. Gil García, A. Saha), Comm. Math. Phys. 403 (2023), 1611-1626 (see
doi
10.1007/s00220-023-04830-6)
*The H/Q-correspondence and a generalization of the
supergravity c-map* (with K. Hasegawa), Tohoku Math.
J., accepted November 11, 2022,
arXiv:2207.09013 (math.DG)
*Bn-generalized pseudo-Kähler structures* (with L. David),
J. Geom. Anal., accepted May 2, 2023 (see
doi 10.1007/s12220-023-01311-z )
*Hermitian structures on a class of quaternionic Kähler manifolds* (with A. Saha, D. Thung),
arXiv:2206.07946 (math.DG)
*Classification of generalized Einstein metrics on 3-dimensional Lie groups* (with D. Krusche), Canad. J. Math. 75, no. 6 (2023), 2038-2095 (see
doi 10.4153/S0008414X23000056 )
*A note on quaternionic Kähler manifolds with ends of finite volume*, Q. J. Math.74, no. 4 (2023), 1489-1493 (see doi https://doi.org/10.1093/qmath/haad029)
*S-duality and the universal isometries of q-map spaces*
(with I. Tulli),
Comm. Math. Phys. 394 (2022), 833-885
Comm. Math. Phys.,
arXiv: 2202.03121(math. DG)
*Heisenberg-invariant self-dual Einstein manifolds*
(with A. Murcia), Class. Quantum Gravity 39 (2022) 235007, Class. Quantum Gravity,
arXiv:2111.11361 (math.DG)
*Classification of left-invariant Einstein metrics on
SL(2,ℝ) × SL(2,ℝ) that are bi-invariant under a
one-parameter subgroup* (with J. Ehlert, A.S. Haupt and
D. Lindemann), Ann. Glob. Anal. Geom., accepted November 25, 2022,
arXiv:2201.07343 (math.DG)
*Quaternionic Kähler metrics associated to special
Kähler manifolds with mutually local variations of BPS structures* (with I. Tulli),
Annales Henri Poincaré 23 (2022), 2025-2067
Ann. Henri Poincaré,
arXiv:2105.09011 (math.DG)
*Complete quaternionic Kähler manifolds with finite
volume ends* (with M. Röser and D. Thung), Annales de
l'Institut Fourier, accepted December 16, 2022,
arXiv:2105.00727 (math.DG)
*Unimodular Sasaki and Vaisman Lie groups* (with K. Hasegawa), Math. Z., accepted January 3, 2023 (see doi 10.1007/s00209-023-03233-6)
*Four-dimensional Einstein manifolds with Heisenberg
symmetry* (with A. Saha)
Annali di Matematica Pura ed
Applicata 201 (2022), 1075-1095
*Special Vinberg Cones* (with D. V. Alekseevsky),
Transformation Groups 26, no. 2 (2021), 377-402, see
http://link.springer.com/article/10.1007/s00031-021-09649-w
*T-duality for transitive Courant algebroids* (with L. David), J.
Symplectic Geom. 21, no. 4 (2023), 775-856
https://dx.doi.org/10.4310/JSG.2023.v21.n4.a4
*Symmetries of quaternionic Kähler manifolds with
S1-symmetry* (with A. Saha and D. Thung), Trans.
London Math. Soc. 8, no. 1 (2021), 95-119, see
https://doi.org/10.1112/tlm3.12026,
arXiv:2001.10026 (math.DG)
*Curvature of quaternionic Kähler manifolds with
S1-symmetry* (with A. Saha and D. Thung), manuscripta
mathematica 2021, see
http://link.springer.com/article/10.1007/s00229-021-01294-7,
arXiv:2001.10032 (math.DG)
*Spinors of real type as polyforms and the generalized Killing
equation* (with C. I. Lazaroiu and C. Shahbazi), Math. Z. 2021, see
https://link.springer.com/content/pdf/10.1007/s00209-021-02726-6.pdf
,
arXiv:1911.08658 (math.DG)
*Four-dimensional vector multiplets in arbitrary
signature I and II * (with L. Gall and
T. Mohaupt), International Journal of Geometric Methods in Modern
Physics 17, no. 10 (2020), 25 and 36 pages, respectively,
arXiv:1907.12067 (hep-th)
*Generalized connections, spinors, and integrability of generalized
structures on Courant algebroids* (with
L. David), Moscow Mathematical Journal 21, no. 4 (2021), 695-736,
DOI:10.17323/1609-4514-2021-21-4-695-736,
arXiv:1905.01977
(math.DG)
*The quaternionic/hypercomplex-correspondence* (with
K. Hasegawa), Osaka J. Math. 58 (2021), 213-238,
arXiv:1904.06056
(math.DG)
*Geometry and holonomy of indecomposable cones* (with
D.V. Alekseevsky and T. Leistner),
Revista Matemática Iberoamericana (2021)
, cf. Sec. 1-6 of
arXiv: 1902.02493 (math.DG)
*Semi-Riemannian cones with parallel null planes* (with
D.V. Alekseevsky and T. Leistner), Proceedings of the X International Meeting on Lorentzian Geometry,
Springer Proceedings in Mathematics and Statistics, in press (2021)
, cf. Sec. 7 of
arXiv: 1902.02493 (math.DG)
*Geometric Flows and the Geometry of Space-time*
(with co-eds. K. Kröncke and J. Louis), Tutorials, Schools, and
Workshops in the Mathematical Sciences 2, Springer Nature, 2018, 129 pages,
book
*Geometric $\mathcal{N}=1$ supergravity and chiral triples on Riemann
surfaces* (with C. I. Lazaroiu and C. Shahbazi),
Comm. Math. Phys. 375, 429-478 (2020), see
https://doi.org/10.1007/s00220-019-03476-7,
arXiv:1810.12353
(hep-th)
*Mathematical Aspects of String Compactifications
* (with J. Louis), in J. Haller and M. Grefe (eds.), Particles, Strings and the Early Universe: The Structure of Matter and Space-Time, Hamburg (2018),
DOI: 10.3204/PUBDB-2018-00782
*Twist, elementary deformation, and KK correspondence in generalized complex geometry
* (with L. David), Int. J. Math. 31, no. 10 (2020), 51 pages.
arXiv:1706.05516
(math.DG)
*Quarter-pinched Einstein metrics interpolating between real and complex
hyperbolic metrics
* (with A. Saha), Math. Z. 290 (2018), 155-166,
arXiv:1705.04186
(math.DG); The publication is available at Springer via https://doi.org/10.1007/s00209-017-2013-x
*Left-invariant Einstein metrics on $S^3 \times S^3$
* (with F. Belgun, A. Haupt and D. Lindemann), J. Geom. Phys. 128
(2018), 128-139,
arXiv:1703.10512
(math.DG);
see also link for accompanying data files
*ASK/PSK-correspondence and the r-map
* (with P. Dieterich and T. Mohaupt),
Lett. Math. Phys. 108 (5) (2018), 1279-1306,
arXiv:1702.02400
(math.DG); The publication is available at Springer via https://doi.org/10.1007/s11005-017-1032-1
*
A class of cubic hypersurfaces and quaternionic Kähler manifolds of
co-homogeneity one* (with M. Dyckmanns, M.
Jüngling and D. Lindemann), Asian J. Math. 25 (1) (2021) 001-030,
https://dx.doi.org/10.4310/AJM.2021.v25.n1.a1
*Pseudo-Riemannian almost quaternionic
homogeneous spaces with irreducible isotropy*
(with B. Meinke), Geom. Dedicata 196 (2018), 45-52,
arXiv:1701.04336
(math.DG); The publication is available at Springer via https://doi.org/10.1007/s10711-017-0304-3
*Lecture Notes on Mathematical Methods of Classical Physics*
(with A. Haupt), Springer Briefs in Physics (2017),
arXiv:1612.03100
(math-ph);
The publication is available at Springer via
link
*Completeness of projective special Kähler and
quaternionic Kähler manifolds*
(with M. Dyckmanns and S. Suhr),
in ''Special metrics and group actions in geometry'' Springer INdAM
Series vol. 23 (2017), 81-106,
arXiv:1607.07232
(math.DG);
The publication is available at Springer via
link
*Pseudo-Riemannian almost hypercomplex homogeneous spaces with irreducible isotropy*
(with B. Meinke), J. of Lie Theory
27 (2017), no. 4, 982-993,
arXiv:1606.06486
(math.DG)
*Special Geometry of Euclidean Supersymmetry IV: the local c-map*
(with P. Dempster, T. Mohaupt and O. Vaughan), JHEP 10 (2015) 066,
arXiv:1507.04620
(hep-th)
*Locally homogeneous nearly Kähler manifolds*
(with J. J. Vásquez), Annals Glob. Anal. Geom. (3) 48 (2015),
269-294,
arXiv:1410.6912
(math.DG)
*Completeness of hyperbolic centroaffine hypersurfaces*
(with M. Nardmann and S. Suhr), Comm. Anal. Geom., Vol. 24, no. 1
(2016), 59-92,
arXiv:1407.3251
(math.DG)
*On the boundary behaviour of left-invariant Hitchin and hypo flows*
(with F. Belgun, M. Freibert and O. Goertsches),
J. London Math. Soc. (2) 92 (2015), 41-62,
arXiv:1405.1866
(math.DG)
*Homogeneous locally conformally Kähler and Sasaki manifolds *
(with D. V. Alekseevsky, K. Hasegawa and Y. Kamishima),
Int. J. Math. 26, no. 6 (2015), 29 pp.,
arXiv:1403.3268
(math.DG)
*Time-like reductions of five-dimensional supergravity*
(with P. Dempster and T. Mohaupt), JHEP 1404 (2014) 190,
arXiv:1401.5672v1
(hep-th)
*Symplectic Lie Groups*
(with O. Baues), Astérisque 379 (2016), 96 pp.
arXiv:1307.1629 (math.DG)
* Quaternionic Kähler metrics associated with special Kähler
manifolds *
(with D.V. Alekseevsky, M. Dyckmanns and T. Mohaupt),
J. Geom. Phys. 92 (2015), 271-287,
arXiv:1305.3549 (math.DG)
* Classification of complete projective special real surfaces *
(with M. Dyckmanns and D. Lindemann), Proc. London
Math. Soc. 109 (2014), no. 2, 353-381,
arXiv:1302.4570 (math.DG)
* Conification of Kähler and hyper-Kähler manifolds *
(with D.V. Alekseevsky and T. Mohaupt), Comm. Math. Phys. 324 (2013),
no. 2, 637-655,
arXiv:1205.2964 (math.DG)
* On certain Kähler quotients of quaternionic Kähler manifolds *
(with J. Louis, P. Smyth and H. Triendl), Comm. Math. Phys. 317 (2013), no. 3,
787-816,
arXiv:1111.0679 (math.DG)
* Completeness in supergravity constructions *
(pdf)
(with X. Han and T. Mohaupt), Comm. Math. Phys. 311 (2012), no. 1, 191-213,
arXiv:1101.5103 (hep-th)
* Half-flat Structures and Special Holonomy*
(pdf)
(with T. Leistner, L. Schäfer and F. Schulte-Hengesbach),
Proc. London Math. Soc. (3) 102 (2011), 113-158
arXiv:math/0907.1222v1
*Handbook of pseudo-Riemannian geometry and supersymmetry*
(ed.) IRMA Lectures in Mathematics and Theoretical Physics 16 (2010),
964 pages, book
* Geometric structures on Lie groups with flat bi-invariant metric*
(pdf)
(with L. Schäfer), J. Lie Theory 19 (2009), no. 2, 423-437
* Special Geometry of Euclidean Supersymmetry III:
the local r-map, instantons and black holes*
(pdf)
(with T. Mohaupt), J. High Energy Phys. 2009, no. 7, 066, 66 pp.,
arXiv:hep-th/0905.2844v1
*Geometric construction of the r-map: from affine special real to special
Kähler manifolds* (pdf)
(with D.V. Alekseevsky), Comm. Math. Phys. 291 (2009), 579-590
(published online 04/09),
arXiv:math/0811.1658
*Cones over pseudo-Riemannian manifolds and their holonomy*
(pdf) (with D.V. Alekseevsky, A.S. Galaev and T. Leistner), Journal für die reine und angewandte Mathematik
(Crelle's Journal) 635 (2009), 23-69, arXiv:math/0707.3063.
*On pseudo-Riemannian manifolds with many Killing spinors *
(pdf)
(with D.V. Alekseevsky), AIP Conference Proceedings Volume 1093, March 2009,
Special Metrics and Supersymmetry:
Proceedings of the Workshop on Geometry and Physics (Bilbao, 2008),
Eds. O.J. Garay, M. Fernández, L.C. de Andrés, L. Ugarte, arXiv:math/0902.4536
*Differential geometric aspects of the tt*-equations*
(pdf) (with L. Schäfer),
Proceedings of Symposia in Pure Mathematics Vol. 78, 2008.
("From Hodge Theory to Integrability and TQFT: tt*-geometry", Eds.
R. Donagi and K. Wendland)
* The twistor spaces of a para-quaternionic Kähler manifold*
(dvi) (with D.V. Alekseevsky), Osaka J. Math. 45 (2008), no. 1, 215-251.
*
Flat nearly Kähler manifolds*
(dvi) (with Lars Schäfer), Annals Glob. Anal. Geom. 32 (2007), 379-389, arXiv:math.DG/0610176.
* The special geometry of Euclidian supersymmetry: a survey*
(pdf), Revista de la Unión
Matemática Argentina Vol. 47-1 (2006), p. 29-34.
* An introduction to supersymmetry*
(pdf), Revista de la Unión Matemática Argentina Vol. 47-1 (2006), p. 23-28.
* Aspherical Kähler Manifolds with solvable fundamental group*
(dvi) (with O. Baues),
Geom. Dedicata 122 (2006), 215-229.
*
Affine hyperspheres associated to special para-Kähler manifolds*
(dvi) (with M.-A. Lawn and L. Schäfer),
Int. J. of Geom. Meth. in Mod. Phys. 3 (2006), nos. 5-6, 995.
* Special geometry of Euclidean Supersymmetry II: hypermultiplets and
the c-map*
(ps) (with C. Mayer, T. Mohaupt and
F. Saueressig), J. High Energy Phys. 06 (2005) 025, arXiv:hep-th/0503094.
* Classification of pseudo-Riemannian symmetric spaces of quaternionic
Kähler type*
(dvi) (with D.V. Alekseevsky),
Amer. Math. Soc. Transl.(2) 213 (2005), 33-62.
* Topological-antitopological fusion equations, pluriharmonic
maps and special Kähler manifolds*
(dvi) (with Lars Schäfer),
in 'Complex, Contact and Symmetric Manifolds',
eds. O. Kowalski, E. Musso and D. Perrone, Progress in
Mathematics 234, Birkhäuser 2005.
* Odd Riemannian symmetric spaces associated to four-forms*
(dvi), Math. Scand. 98 (2006), 201-216.
*Special Geometry of Euclidean Supersymmetry I: Vector Multiplets*
(dvi) (with C. Mayer, T. Mohaupt, F.
Saueressig), J. High Energy Phys. 03 (2004) 028, hep-th/0312001.
*Polyvector Super-Poincaré Algebras*
(dvi) (with D.V. Alekseevsky,
C. Devchand
and A. Van Proeyen), Comm. Math. Phys. 253 (2005), no. 2, 385-422,
arXiv:hep-th/0311107.
*Yang-Mills connections over manifolds with Grassmann structure*
(dvi) (with D.V. Alekseevsky and C. Devchand),
J. Math. Phys. 44 (2003), 6047-6076.
* Proper affine hyperspheres which fiber over
projective special Kähler manifolds* (dvi)
(with O. Baues), Asian J. Math. 7 (2003), no. 1, 115-132.
* A class of Osserman spaces* (dvi)
(with D.V. Alekseevsky,
N. Blazic and S. Vukmirovic), J. Geom. Phys. 53 (2005), 345-353.
* Partially-flat gauge fields on manifolds
of dimension greater than four* (dvi)
(with D.V. Alekseevsky and C. Devchand), in Proceedings of the Workshop on
``Special Geometric Structures in String Theory''
(Bonn 2001), Eds. D.V. Alekseevsky, V. Cortés,
C. Devchand and A. Van Proeyen, electronic library of the
EMS. 2001.
* Flows on quaternionic-Kähler and very special real
manifolds*(dvi) (with D.V. Alekseevsky,
C. Devchand and A. Van Proeyen), Comm. Math. Phys.
238 (2003), 525-543, arXiv:hep-th/0109094.
* Special Kähler manifolds: a survey *(dvi),
in Proceedings of the 21st Winter School on
``Geometry and Physics'' (Srni 2001), Eds. J. Slovak and Martin Cadek, Rend.
Circ. Mat. Palermo (2) Suppl. no. 66 (2001), 11-18.
*A holomorphic representation formula for parabolic
hyperspheres. *(dvi), in Proceedings of
the international conference "PDEs, Submanifolds and Affine Differential
Geometry", (Warsaw 2000), eds. B. Opozda, U. Simon and M. Wiehe,
Banach Center Publications (Polish Academy of Sciences,
Institute of Mathematics) Vol. 57 (2002), 11-16, math.DG/0107037.
*Abelian simply transitive groups of symplectic type.
*(dvi) (with O. Baues) Annales de l'Institut Fourier
52, no. 6 (2002), 1729-1751.
*Classification of indefinite hyper-Kähler symmetric spaces.
*(dvi)
(with D.V. Alekseevsky), Asian J. Math. 5 (2001), no. 4, 663-684.
*Special complex manifolds. *(dvi)
(with D.V. Alekseevsky and C. Devchand), J. Geom. Phys. 42 (2002),
85-105.
*Realisation of special Kähler manifolds as parabolic
spheres. *(dvi)
(with O. Baues), Proc. Amer. Math. Soc. 129 (2001),
no. 8, 2403-2407.
*A new construction of homogeneous quaternionic manifolds and related
geometric structures. *(dvi) Habilitationsschrift
(Bonn, 1998) Memoirs Amer. Math. Soc. 147, no. 700 (2000), 1-63.
*Classification of stationary compact homogeneous special pseudo Kähler
manifolds of semisimple groups. *(dvi) (with D.V.
Alekseevsky), Proc. London Math. Soc. (3) 81 (2000), 211-230.
*Isometry groups of homogeneous quaternionic Kähler manifolds. *(dvi)
(with D.V. Alekseevsky), J. Geom. Anal. 9 (1999), no. 4, 513-545.
*On hyper Kähler manifolds associated to Lagrangian Kähler
submanifolds of T^*C^n. *(dvi) Trans. Amer.
Math. Soc. 350 (1998), no. 8, 3193-3205.
*What is the role of twistors in supergeometry? *(dvi)
in Proceedings of the 3rd International Conference on Differential Geometry
and its Applications and 1st German-Romanian Seminar on Geometry (Sibiu,
1997), General Math. 5 (1997), 125-130.
*Killing spinors are Killing vector fields in Riemannian supergeometry.
*(dvi) (with D.V. Alekseevsky, C. Devchand and
U. Semmelmann), J. Geom. Phys. 26 (1998), 37-50.
*Classification of N-(super)-extended Poincaré algebras and bilinear
invariants of the spinor representation of Spin(p,q). *(dvi)
(with D.V. Alekseevsky), Comm. Math. Phys. 183 (1997), no. 3, 477-510.
*Homogeneous quaternionic Kähler manifolds of unimodular group. *(pdf)
(with D.V. Alekseevsky), Boll. Un. Mat. Ital. B (7) 11 (1997), no. 2, suppl.,
217-229 (special issue dedicated to the memory of Franco Tricerri).
*Homogeneous special geometry. *(dvi) Transform.
Groups 1 (1996), no. 4, 337-373.
*Alekseevskian spaces. *(dvi) Differential
Geom. Appl. 6 (1996), no. 2, 129-168.
*Mirror supersymmetry in the space of (super) extended Poincaré
algebras. *(with D.V. Alekseevsky), Lett. Math. Phys. 38 (1996), no.
3, 283-287.
*Alekseevskiis quaternionische Kählermannigfaltigkeiten.
*Dissertation
(Bonn, 1993) Bonner Math. Schriften 267 (1994).