El Escorial ■ Spain ■ 2006

Theoretical High Energy Physics

Field Theoretic Approaches to Quantum Gravity

1. •A local induced action for the noncritical string
   W. Westra, S. Zohren, Preprint (2011) [arxiv:1106.1460]
   

Stochastic Quantisation

1. •Proper time is stochastic time in 2d quantum gravity
   J. Ambjørn, R. Loll, W. Westra, S. Zohren, in “Foundations of Space and Time,” ed. J. Murugan, A. Weltman and G. Ellis, Cambridge University Press, (2011) [arxiv:0911.4211]
   

2. •Stochastic quantization and the role of time in quantum gravity
   J. Ambjørn, R. Loll, W. Westra, S. Zohren, Phys. Lett. B 680, 359-364, (2009) [arxiv:0908.4224]
   

Random Matrix Models for Causal Dynamical Triangulations

1. •Summing over all Topologies in CDT String Field Theory
   J. Ambjørn, R. Loll, W. Westra, S. Zohren, Phys. Lett. B 678, 227-232, (2009) [arxiv:0905.2108]
   

2. •A new continuum limit of matrix models
   J. Ambjørn, R. Loll, Y. Watabiki, W. Westra, S. Zohren, Phys. Lett. B 670: 224-230, (2008) [arxiv:0810.2408]
   

3. •A Causal Alternative for c=0 Strings
   J. Ambjørn, R. Loll, Y. Watabiki, W. Westra, S. Zohren, Acta Phys. Polon. B 39, 3355-3364, (2008)
   

4. •A matrix model for 2D quantum gravity defined by Causal Dynamical Triangulations
   J. Ambjørn, R. Loll, Y. Watabiki, W. Westra, S. Zohren, Phys. Lett. B 665, 252-256, (2008)
   

String Field Theory and Generalised Causal Dynamical Triangulations

1. •A String Field Theory based on Causal Dynamical Triangulations
   J. Ambjørn, R. Loll, Y. Watabiki, W. Westra, S. Zohren JHEP 0805, 032, (2008)
   

2. •Putting a cap on causality violations in CDT
   J. Ambjørn, R. Loll, Y. Watabiki, W. Westra, S. Zohren JHEP 0712, 017, (2007)
   
   

Phenomenological Models of Causal Dynamical Triangulations

1. •The emergence of background geometry from quantum fluctuations
   J. Ambjørn, R. Janik, W. Westra, S. Zohren, Phys. Lett. B 641, 94 -98, (2006)
   

2. •Taming the cosmological constant in 2-D causal quantum gravity with topology change
   R. Loll, W. Westra, S. Zohren, Nucl. Phys. B 751, 419-435, (2006)
   

Phenomenological Approaches to Gravitational Entropy Bounds

1. •Evidence for an entropy bound from fundamentally discrete gravity
   D. Rideout, S. Zohren, Class. Quant. Grav. 23, 6195-6213, (2006)
   

Review articles and lecture notes

1. •New aspects of two-dimensional quantum gravity
   J. Ambjørn, R. Loll, W. Westra, S. Zohren,
   Lecture notes published in Acta Phys. Polon. B 40, 3479, (2009)
   

2. •A Causal Perspective on Random Geometry,
   S. Zohren, PhD Thesis, Imperial College London, (2008)
   

Mathematical Physics and Probability Theory

Probabilistic Aspects of Uniform Infinite Causal Triangulations

1. •A note on weak convergence results for uniform infinite causal triangulations
   V. Sisko, A. Yambartsev, S. Zohren, submitted to Markov Processes and Related Fields
   

2. •Growth of uniform infinite causal triangulations
   V. Sisko, A. Yambartsev, S. Zohren, to appear
   

Random Walks on Graph Ensembles

1. •in progress
   

Quantum Information Theory

Bell Inequalities and their Quantum Violations

1. •A tight Tsirelson inequality for infinitely many outcomes
   S. Zohren, P. Reska, R. D. Gill, W. Westra, Europhysics Letters 90,10002, (2010)
   

2. •Maximal violation of the CGLMP inequality for infinite dimensional states
   S. Zohren, R. D. Gill Phys. Rev. Lett. 100, 120406 (2008)
   

Online databases for a complete list of publications

You can find my publication on arXiv.org and SPIRES. Please note that publications in the field of probability theory and quantum information are not displayed in spires or might have an incomplete citation matrix.

Note: Publications in the field of quantum information use first-author system while all others employ an alphabetical author ordering.