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Publications Influence

Quantum geometry of refined topological strings

- M. Aganagic, M. C. Cheng, R. Dijkgraaf, Daniel Krefl, C. Vafa
- Physics
- 3 May 2011

A bstractWe consider branes in refined topological strings. We argue that their wavefunctions satisfy a Schrödinger equation depending on multiple times and prove this in the case where the… Expand

140 22- PDF

Dimers and orientifolds

- S. Franco, A. Hanany, Daniel Krefl, J. Park, A. Uranga, David C. Vegh
- Physics
- 3 July 2007

We introduce new techniques based on brane tilings to investigate D3-branes probing orientifolds of toric Calabi-Yau singularities. With these new tools, one can write down many orientifold models… Expand

85 11- PDF

Gaugino Condensates and D-terms from D7-branes

- M. Haack, Daniel Krefl, D. Lust, A. Proeyen, M. Zagermann
- Physics
- 28 September 2006

We investigate, at the microscopic level, the compatibility between D-term potentials from world-volume fluxes on D7-branes and non-perturbative superpotentials arising from gaugino condensation on a… Expand

166 9- PDF

UvA-DARE ( Digital Academic Repository ) Quantum Geometry of Refined Topological Strings

We consider branes in refined topological strings. We argue that their wavefunctions satisfy a Schrödinger equation depending on multiple times and prove this in the case where the topological string… Expand

44 7- PDF

Extended Holomorphic Anomaly in Gauge Theory

- Daniel Krefl, J. Walcher
- Mathematics, Physics
- 1 July 2010

The partition function of an $${\mathcal {N}=2}$$ gauge theory in the Ω-background satisfies, for generic value of the parameter $${\beta=-{\epsilon_1}/{\epsilon_2}}$$ , the, in general extended, but… Expand

90 7- PDF

Real mirror symmetry for one-parameter hypersurfaces

- Daniel Krefl, J. Walcher
- Physics
- 7 May 2008

We study open string mirror symmetry for one-parameter Calabi-Yau hyper- surfaces in weighted projective space. We identify mirror pairs of D-brane configurations, derive the corresponding… Expand

44 4- PDF

Shift versus Extension in Refined Partition Functions

- Daniel Krefl, J. Walcher
- Physics
- 13 October 2010

We have recently shown that the global behavior of the partition function of N=2 gauge theory in the general Omega-background is captured by special geometry in the guise of the (extended)… Expand

29 2- PDF

The Real Topological Vertex at Work

- Daniel Krefl, S. Pasquetti, J. Walcher
- Physics
- 8 September 2009

We develop the real vertex formalism for the computation of the topological string partition function with D-branes and O-planes at the fixed point locus of an anti-holomorphic involution acting… Expand

17 1- PDF

Gauge theory analog of some stringy D-instantons

- Daniel Krefl
- Physics
- 19 March 2008

We argue that one can see a specific class of 'stringy' D-instantons in the underlying 4D gauge theory as the UV completion of an ordinary gauge instanton of a completely broken gauge group… Expand

16 1- PDF

Machine learning of Calabi-Yau volumes

- Daniel Krefl, Rak-Kyeong Seong
- Physics, Mathematics
- 11 June 2017

We employ machine learning techniques to investigate the volume minimum of Sasaki-Einstein base manifolds of noncompact toric Calabi-Yau three-folds. We find that the minimum volume can be approxim… Expand

55- PDF