Magdalena Constantin

Professional Education

• Doctor of Philosophy, University of Maryland College Park (2005)

Faculty Advisor

• Paul Keall

Research Interests

My research is focused on Monte Carlo simulations for photon and proton beam radiotherapy using the Geant4 toolkit. I work on developing a feasible system for generating a clinically useful beam from the initial phase space. The aim of this project is to provide feedback to the experimental efforts for optimal design specifications of the medical accelerator.

Publications

• Saturation of two-level systems and charge noise in Josephson junction qubits Magdalena Constantin,  Clare C. Yu, John M. Martinis.  Phy. Rev. B.  2009; 79 094520
• Microscopic model of critical current noise in Josephson junctions. Constantin M,  Yu CC.  Phys Rev Lett.  2007; 99 (20): 207001
• Volatility, persistence, and survival in financial markets. Constantin M,  Sarma SD.  Phys Rev E Stat Nonlin Soft Matter Phys.  2005; 72 (5 Pt 1): 051106
• Sampling-time effects for persistence and survival in step structural fluctuations. Dougherty DB,  Tao C, Bondarchuk O, Cullen WG, Williams ED, Constantin M, Dasgupta C, Das Sarma S.  Phys Rev E Stat Nonlin Soft Matter Phys.  2005; 71 (2 Pt 1): 021602
• Mapping spatial persistent large deviations of nonequilibrium surface growth processes onto the temporal persistent large deviations of stochastic random walk processes. Constantin M,  Das Sarma S.  Phys Rev E Stat Nonlin Soft Matter Phys.  2004; 70 (4 Pt 1): 041602
• Generalized survival in equilibrium step fluctuations. Constantin M,  Sarma SD.  Phys Rev E Stat Nonlin Soft Matter Phys.  2004; 69 (5 Pt 1): 052601
• Survival in equilibrium step fluctuations. Dasgupta C,  Constantin M, Das Sarma S, Majumdar SN.  Phys Rev E Stat Nonlin Soft Matter Phys.  2004; 69 (2 Pt 1): 022101
• Persistence in nonequilibrium surface growth. Constantin M,  Dasgupta C, Chatraphorn PP, Majumdar SN, Sarma SD.  Phys Rev E Stat Nonlin Soft Matter Phys.  2004; 69 (6 Pt 1): 061608
• Spatial persistence and survival probabilities for fluctuating interfaces. Constantin M,  Sarma SD, Dasgupta C.  Phys Rev E Stat Nonlin Soft Matter Phys.  2004; 69 (5 Pt 1): 051603
• Infinite family of persistence exponents for interface fluctuations. Constantin M,  Das Sarma S, Dasgupta C, Bondarchuk O, Dougherty DB, Williams ED.  Phys Rev Lett.  2003; 91 (8): 086103
• Mode-coupling approach to non-Newtonian Hele-Shaw flow. Constantin M,  Widom M, Miranda JA.  Phys Rev E Stat Nonlin Soft Matter Phys.  2003; 67 (2 Pt 2): 026313
• Experimental persistence probability for fluctuating steps. Dougherty DB,  Lyubinetsky I, Williams ED, Constantin M, Dasgupta C, Das Sarma S.  Phys Rev Lett.  2002; 89 (13): 136102