I can be reached at:

The University of Texas at Austin

Mathematics Dept. RLM 8.100

Attn: Andrew Neitzke

2515 Speedway Stop C1200

Austin, TX 78712-1202

Office: RLM 9.134

neitzke@math.utexas.edu

Mathematics Dept. RLM 8.100

Attn: Andrew Neitzke

2515 Speedway Stop C1200

Austin, TX 78712-1202

Office: RLM 9.134

neitzke@math.utexas.edu

My surname is most correctly pronounced "Night-Ski".

I am co-organizer of the Geometry and String Theory Seminar at UT Austin; the calendar for this seminar is here.

Cluster-like coordinates in supersymmetric field theory.
Proceedings of the National Academy of Sciences.
PNAS link
[ ]

Notes on a new construction of hyperkahler metrics.
To appear in proceedings of the conference *Mirror Symmetry & Tropical Geometry*, Cetraro 2011.
1308.2198
[ ]

Four-dimensional wall-crossing via three-dimensional field theory.
Commun. Math. Phys. 299 (2010) 163-224.
0807.4723
[+]

Background Independence and the Open Topological String Wavefunction.
In "From Hodge theory to integrability and TQFT" (2008), American Mathematical Society.
0709.2390
[+]

For a fuller list of my papers see
inSPIRE.
Some new geometric applications of quantum field theory.
Bonn (Panorama of Mathematics), October 2015.
Slides

A smooth R^3 index for four-dimensional N=2 theories.
Princeton (STRINGS 2014), June 2014.
Slides

Spectral networks and their uses.
Pisa, June 2014.
Notes

Gluing construction for a hyperholomorphic line bundle.
UC Davis, May 2014.
Notes

Open string mirror symmetry and Hitchin systems.
Miami, January 2014.
Notes

Spectral networks in 2 and 3 dimensions.
String-Math, June 2013.
Notes (with animations), Video

On the utility of the equation 2+4=6 in supersymmetric quantum field theory.
Austin (physics colloquium), February 2013.
Notes

Introduction to wall-crossing (through spaces of quadratic differentials).
IHES, November 2011.
Notes, Video

A 2d-4d wall-crossing formula.
Cetraro, July 2011.
Slides

Hitchin systems and enumerative invariants.
Michigan, December 2010.
Slides

2d-4d wall-crossing and hyperholomorphic bundles.
DESY, December 2010.
Slides

4d and 2d-4d wall-crossing.
Simons Center for Geometry and Physics, August 2010.
Video

BPS wall-crossing, field theory and hyperkahler geometry.
Oxford, June 2009.
Notes

Asymptotic quasinormal mode frequencies.
Penn State, May 2008.
Notes

An idiosyncratic view of the holomorphic anomaly of the topological string.
Northwestern, February 2008.
Notes

Quantum Maxwell theory.
IAS, September 2007.
Notes

Comparing signs in wall-crossing formulas.
(Last update: 14 Jan 2014)
Draft

Hitchin systems in N=2 field theory.
(Last update: 25 Nov 2013)
Draft

What is a BPS state?
(Last update: 19 Aug 2012)
Draft

The CurvesGraphics6 notebook by Gianluca Gorni is available here; this notebook contains instructions on how to generate the file CurvesGraphics6.m, which is used by the spectral network notebook below.

Notebook for plotting spectral networks.
(Last update: 29 Apr 2014)
Notebook

So far only the raw videos are here; some organizational superstructure and guidance about prerequisites will follow.

What is mirror symmetry?
Video

The Kaluza-Klein mechanism.
Video