**Research Areas**

String theory

**Education and Work Experience**

2018-present PROFESSOR, Tsinghua U., Beijing

2014-2018 POSTDOC, Harvard U.

2011-2014 POSTDOC, Princeton, Inst. Advanced Study

2005-2011 PHD, Texas A-M

**Publications**

[1] D. Xie and W. Yan, “A study of N =1 SCFT derived from N =2 SCFT: index and chiral ring,” arXiv:2109.04090 [hep-th].

[2] D. Xie and D. Zhang, “Mixed Hodge structure and N = 2 Coulomb branch solution,” arXiv:2107.11180 [hep-th].

[3] D. Xie, “3d mirror for Argyres-Douglas theories,” arXiv:2107.05258 [hep-th].

[4] D. Xie and W. Yan, “4d N = 2 SCFTs and lisse W-algebras,” JHEP 04 (2021) 271, arXiv:1910.02281 [hep-th].

[5] D. Xie, “Soft supersymmetry breaking of 4d N = 2 SCFT,” arXiv:1905.00345 [hep-th].

[6] D. Xie and W. Yan, “Schur sector of Argyres-Douglas theory and W -algebra,” SciPost Phys. 10 (2021) no. 3, 080, arXiv:1904.09094 [hep-th].

[7] D. Xie and S.-T. Yau, “Singularity, Sasaki-Einstein manifold, Log del Pezzo surface and N = 1 AdS/CFT correspondence: Part I,” arXiv:1903.00150 [hep-th].

[8] D. Xie and W. Yan, “W algebras, cosets and VOAs for 4d N = 2 SCFTs from M5 branes,” JHEP 04 (2021) 076, arXiv:1902.02838 [hep-th].

[9] Y. Wang and D. Xie, “Codimension-two defects and Argyres-Douglas theories from outer-automorphism twist in 6d (2, 0) theories,” Phys. Rev. D 100 (2019) no. 2, 025001, arXiv:1805.08839 [hep-th].

[10] S. Li, D. Xie, and S.-T. Yau, “Seiberg-Witten differential via primitive forms,” arXiv:1802.06751 [hep-th].

[11] D. Xie, “N = 2 SCFT with minimal flavor central charge,” arXiv:1712.03244 [hep-th].

[12] T. C. Collins, D. Xie, and S.-T. Yau, “The deformed Hermitian-Yang-Mills equation in geometry and physics,” in Nigel Hitchin’s 70th Birthday Conference. 12, 2017. arXiv:1712.00893 [math.DG].

[13] B.Chen,D.Xie,S.S.T.Yau,S.-T.Yau,andH.Zuo,“4dN =2 SCFT and singularity theory Part III: Rigid singularity,” Adv. Theor. Math. Phys. 22 (2018) 1885–1905, arXiv:1712.00464 [hep-th].

[14] D. Xie and K. Ye, “Argyres-Douglas matter and S-duality: Part II,” arXiv:1711.06684 [hep-th].

[15] J. Song, D. Xie, and W. Yan, “Vertex operator algebras of Argyres-Douglas theories from M5-branes,” JHEP 12 (2017) 123, arXiv:1706.01607 [hep-th].

[16] D. Xie and S.-T. Yau, “Three dimensional canonical singularity and five dimensional N = 1 SCFT,” JHEP 06 (2017) 134, arXiv:1704.00799 [hep-th].

[17] D. Xie and S.-T. Yau, “Argyres-Douglas matter and N=2 dualities,” arXiv:1701.01123 [hep-th].

[18] T. C. Collins, D. Xie, and S.-T. Yau, “K stability and stability of chiral ring,” arXiv:1606.09260 [hep-th].

[19] Y. Wang, D. Xie, S. S. T. Yau, and S.-T. Yau, “4d N = 2 SCFT from complete intersection singularity,” Adv. Theor. Math. Phys. 21 (2017) 801–855, arXiv:1606.06306 [hep-th].

[20] B.Chen,D.Xie,S.-T.Yau,S.S.T.Yau,andH.Zuo,“4DN =2 SCFT and singularity theory. Part II: complete intersection,” Adv. Theor. Math. Phys. 21 (2017) 121–145, arXiv:1604.07843 [hep-th].

[21] D. Xie, W. Yan, and S.-T. Yau, “Chiral algebra of the Argyres-Douglas theory from M5 branes,” Phys. Rev. D 103 (2021) no. 6, 065003, arXiv:1604.02155 [hep-th].

[22] D. Xie and K. Yonekura, “Search for a Minimal N=1 Superconformal Field Theory in 4D,” Phys. Rev. Lett. 117 (2016) no. 1, 011604, arXiv:1602.04817 [hep-th].

[23] D. Xie and S.-T. Yau, “New N = 2 dualities,” arXiv:1602.03529 [hep-th].

[24] D. Xie and S.-T. Yau, “Semicontinuity of 4d N=2 spectrum under renormalization group flow,” JHEP 03 (2016) 094, arXiv:1510.06036 [hep-th].

[25] D. Xie and S.-T. Yau, “4d N=2 SCFT and singularity theory Part I: Classification,” arXiv:1510.01324 [hep-th].

[26] Y. Wang and D. Xie, “Classification of Argyres-Douglas theories from M5 branes,” Phys. Rev. D94 (2016) no. 6, 065012, arXiv:1509.00847 [hep-th].

[27] M. Del Zotto, C. Vafa, and D. Xie, “Geometric engineering, mirror symmetry and 6d(1,0) → 4d(N=2),” JHEP 11 (2015) 123, arXiv:1504.08348 [hep-th].

[28] D. Xie, “N=1 Curve,” arXiv:1409.8306 [hep-th].

[29] D. Xie and K. Yonekura, “The moduli space of vacua of N = 2 class S theories,” JHEP 10 (2014) 134, arXiv:1404.7521 [hep-th].

[30] Y.-t. Huang, C. Wen, and D. Xie, “The Positive orthogonal Grassmannian and loop amplitudes of ABJM,” J. Phys. A47 (2014) no. 47, 474008, arXiv:1402.1479 [hep-th].

[31] D. Xie, “Aspects of line operators of class S theories,” arXiv:1312.3371 [hep-th].

[32] D. Xie, “Three dimensional Seiberg-like duality and tropical cluster algebra,” arXiv:1311.0889 [hep-th].

[33] D. Xie and K. Yonekura, “Generalized Hitchin system, Spectral curve and N = 1 dynamics,” JHEP 1401 (2014) 001, arXiv:1310.0467 [hep-th].

[34] D. Xie, “M5 brane and four dimensional N = 1 theories I,” JHEP 1404 (2014) 154, arXiv:1307.5877 [hep-th].

[35] D. Xie, “Higher laminations, webs and N=2 line operators,” arXiv:1304.2390 [hep-th].

[36] D. Xie and P. Zhao, “Central charges and RG flow of strongly-coupled N=2 theory,” JHEP 1303 (2013) 006, arXiv:1301.0210.

[37] D. Xie, “BPS spectrum, wall crossing and quantum dilogarithm identity,” Adv. Theor. Math. Phys. 20 (2016) 405–524, arXiv:1211.7071 [hep-th].

[38] J. J. Heckman, C. Vafa, D. Xie, and M. Yamazaki, “String Theory Origin of Bipartite SCFTs,” JHEP 1305 (2013) 148, arXiv:1211.4587 [hep-th].

[39] D. Xie, “Network, cluster coordinates and N = 2 theory II: Irregular singularity,” arXiv:1207.6112 [hep-th].

[40] D. Xie and M. Yamazaki, “Network and Seiberg Duality,” JHEP 1209 (2012) 036, arXiv:1207.0811 [hep-th].

[41] D. Xie, “General Argyres-Douglas Theory,” JHEP 1301 (2013) 100, arXiv:1204.2270 [hep-th].

[42] D. Xie, “Network, Cluster coordinates and N=2 theory I,” arXiv:1203.4573 [hep-th].

[43] D. Nanopoulos and D. Xie, “More Three Dimensional Mirror Pairs,” JHEP 1105 (2011) 071, arXiv:1011.1911 [hep-th].

[44] F. Benini, Y. Tachikawa, and D. Xie, “Mirrors of 3d Sicilian theories,” JHEP 1009 (2010) 063, arXiv:1007.0992 [hep-th].

[45] D. Nanopoulos and D. Xie, “N = 2 Generalized Superconformal Quiver Gauge Theory,” JHEP 1209 (2012) 127, arXiv:1006.3486 [hep-th].

[46] D. Nanopoulos and D. Xie, “Hitchin Equation, Irregular Singularity, and N = 2 Asymptotical Free Theories,” arXiv:1005.1350 [hep-th].

[47] D. Nanopoulos and D. Xie, “Hitchin Equation, Singularity, and N=2 Superconformal Field Theories,” JHEP 1003 (2010) 043, arXiv:0911.1990 [hep-th].

[48] D. V. Nanopoulos and D. Xie, “On Crossing Symmmetry and Modular Invariance in Conformal Field Theory and S Duality in Gauge Theory,” Phys.Rev. D80 (2009) 105015, arXiv:0908.4409 [hep-th].

[49] D. Nanopoulos and D. Xie, “N=2 SU Quiver with USP Ends or SU Ends with Antisymmetric Matter,” JHEP 0908 (2009) 108, arXiv:0907.1651 [hep-th].

[50] J. Jiang, T. Li, D. V. Nanopoulos, and D. Xie, “Flipped SU(5) x U(1)(X) Models from F-Theory,” Nucl.Phys. B830 (2010) 195–220, arXiv:0905.3394 [hep-th].

[51] T. Li, N. E. Mavromatos, D. V. Nanopoulos, and D. Xie, “Time Delays of Strings in D-particle Backgrounds and Vacuum Refractive Indices,” Phys.Lett. B679 (2009) 407–413, arXiv:0903.1303 [hep-th].

[52] J. Jiang, T. Li, D. V. Nanopoulos, and D. Xie, “F-SU(5),” Phys. Lett. B677 (2009) 322–325, arXiv:0811.2807 [hep-th].

[53] T. Li, Y. Liu, and D. Xie, “Multiple D2-Brane Action from M2-Branes,” Int.J.Mod.Phys. A24 (2009) 3039–3052, arXiv:0807.1183 [hep-th].

[54] D. V. Nanopoulos and D. Xie, “Supercriticality of a class of critical string cosmological solutions,” Phys.Rev. D78 (2008) 044038, arXiv:0710.2312 [hep-th].