Sumanta Tewari

Research Associate
Condensed Matter Theory Center

Department of Physics
University of Maryland
College Park, MD 20742

Office: 2204A

Telephone: 301-405-6168
Email: stewari@umd.edu

My Curriculum Vita (in pdf format)

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PUBLICATIONS
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Physical Review Letters

  1. Sumanta Tewari, C. W. Zhang, S. Das Sarma, C. Nayak, Dung-Hai Lee, ¡°Testable signatures of quantum non-locality in a two-dimensional chiral p-wave superconductor¡±, Phys. Rev. Lett. (2007; in press);  arXiv:condmat/0703717.

  2. Chuanwei Zhang, Sumanta Tewari, S. Das Sarma, ¡°Bell¡¯s inequality and universal quantum gates in a cold atom chiral fermionic p-wave superfluid¡±, Phys. Rev. Lett. 99, 220502 (2007).

  3. Sumanta Tewari, S. Das Sarma, Dung-Hai Lee, ¡°An index theorem for the Majorana zero modes in chiral p-Wave superconductors ¡±, Phys. Rev. Lett. 99, 037001 (2007); reprinted in the August, 2007 issue of Virtual Journal of Quantum Information (Ed. David P. DiVincenzo) (www.vjquantuminfo.org); reprinted in the July 30, 2007 issue of Virtual Journal of Nanoscale Science and Technology (Ed. David Awschalom) (www.vjnano.org).

  4. Sumanta Tewari, S. Das Sarma, Chetan Nayak, C. W. Zhang, and P. Zoller, ¡°Quantum computation using vortices and Majorana zero modes of a px+ipy superfluid of fermionic cold atoms¡±, Phys. Rev. Lett. 98, 010506 (2007); reprinted in the Jan. 22, 2007 issue of Virtual Journal of Nanoscale Science and Technology (Ed. David Awschalom) (www.vjnano.org); reprinted in the Jan., 2007 issue of Virtual Journal of Quantum Information (Ed. David P. DiVincenzo) (www.vjquantuminfo.org).

  5. Sumanta Tewari, V. W. Scarola, T. Senthil, and S. Das Sarma, ¡°Emergence of artificial photons in an optical lattice¡±, Phys. Rev. Lett. 97, 200401 (2006).

  6. Sumanta Tewari, D. Belitz, and T. Kirkpatrick, ¡°Blue quantum fog: Chiral condensation in quantum helimagnets ¡±, Phys. Rev. Lett. 96, 047207 (2006).

  7. Sumanta Tewari, D. Belitz, T. Kirkpatrick , and John Toner, ¡°Spontaneous flux lattices in ferromagnetic spin-triplet superconductors¡±, Phys. Rev. Lett. 93, 177002 (2004).

  8. Sudip Chakravarty, Chetan Nayak, Sumanta Tewari, Xiao Yang, ¡°Sharp signature of DDW quantum critical point in the Hall coefficient of the cuprates¡±, Phys. Rev. Lett. 89, 277003 (2002).

 Physical Review B and E (Rapid Communications)

  1.  Sankar Das Sarma, Chetan Nayak, and Sumanta Tewari, ¡°Proposal to stabilize and detect half-quantum vortices in strontium ruthenate thin films: Non-Abelian braiding statistics of vortex matter in a px + ipy superconductor¡± Phys. Rev. B 73, 220502 (Rapid Communication) (2006); reprinted in the June, 2006 issue of Virtual Journal of Quantum Information (Ed. David P. DiVincenzo) (www.vjquantuminfo.org); covered in the Search & Discovery section of Physics Today, December 2006, Page 23.

  2. Sumanta Tewari, John Toner, and Sudip Chakravarty, ¡°Floating Phase in a dissipative Josephson-junction array¡±, Phys. Rev. B 72, 060505 (Rapid Communication) (2005); reprinted in the August 29, 2005 issue of Virtual Journal of Nanoscale Science and Technology (Ed. David Awschalom) (www.vjnano.org); reprinted in the September 1, 2005 issue of Virtual Journal of Applications of Superconductivity (Ed. John R. Clem) (www.vjsuper.org).

  3. Sudip Chakravarty, Sumanta Tewari, and Chetan Nayak, ¡°Angle-resolved photoemission spectra in the cuprates from the d-density wave theory¡±, Phys. Rev. B 68, 100504 (Rapid Communication) (2003).

  4. Indranil Paul, Sumanta Tewari, and J. K. Bhattacharjee, ¡°Kardar-Parisi-Zhang equation and the δ-expansion¡±, Phys. Rev. E 55, 2097 (Rapid Communication) (1997).

 Physical Review B

  1. Sumanta Tewari, John Toner, and Sudip Chakravarty, ¡°The nature and boundary of the floating phase in a dissipative Josephson-junction array¡±, Phys. Rev. B 73, 064503 (2006).

  2. Sumanta Tewari, Sudip Chakravarty, John Ove Fjaerestad, Chetan Nayak, and Richard S. Thompson, ¡°Infrared Hall angle in the d-density wave state: a comparison of theory and experiment¡±, Phys. Rev. B 70, 014514 (2004).

  3. Sumanta Tewari, ¡°Crossover and scaling in a two-dimensional field-tuned superconductor¡±, Phys. Rev. B 69, 014512 (2004).

  4. Sumanta Tewari and S. Chakravarty,¡° Collective modes in the d-density wave state of the cuprates¡±, Phys. Rev. B 66, 054510 (2002).

  5. Sumanta Tewari, H.-Y. Kee, C. Nayak, and S. Chakravarty, ¡°Spin and current correlation functions in the d-density wave state of the cuprates¡±, Phys. Rev. B 64, 224516 (2001).

 Other journals

  1. Chuanwei Zhang, V.W. Scarola, Sumanta Tewari, S. Das Sarma, ¡°Anyonic braiding in optical lattices ¡±, Proceedings of the National Academy of Sciences (PNAS) (USA) 104, 18415 (2007).

  2. Masaki Oshikawa, Yong Baek Kim, Kirill Shtengel, Chetan Nayak, Sumanta Tewari, ¡°Topological degeneracy of non-Abelian states for dummies¡±, Annals of Physics 322, 1477 (2007).

  3. Sumanta Tewari and John Toner, ¡°Dissipate locally, couple globally: a sharp transition from decoupling to infinite range coupling in Josephson arrays with on-site dissipation¡±, Europhysics Letters, 74, 341 (2006).

 Submitted preprints

  1. Chuanwei Zhang, Sumanta Tewari, John Toner, S. Das Sarma, ¡°Ginzburg-Landau theory for the conical cycloid state in multiferroics: Applications to CoCr2O4¡±, submitted to Phys. Rev. Lett.; arXiv:0710.4550.

  2. Sumanta Tewari, Chuanwei Zhang, John Toner, S. Das Sarma, ¡°Goldstone modes and electromagnon fluctuations in the conical cycloid state of a multiferroic¡±, submitted to Phys. Rev. Lett.; arXiv:0710.4551.

  3. Sumanta Tewari, C. W. Zhang, V. Yakovenko, S. Das Sarma, ¡°d + id density wave as a source of time reversal symmetry breaking in underdoped cuprates¡±, submitted to Phys. Rev. Lett.; arXiv:0711.2329.