Implementation of continuous time quantum Monte Carlo solvers for the infinite dimensional Hubbard model at half filling
Published in Goethe University Frankfurt, 2018
Master thesis in physics.
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publications
Systemic Greeks: Measuring risk in financial networks
Published in arXiv, 2018
This paper investigates the impact of cross-shareholdings in networks of firms under external shocks.
Recommended citation: Nils Bertschinger, Julian Stobbe (2018). https://doi.org/10.48550/arXiv.1810.11849
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Risk sensitivies in risk-neutral network valuations
Published in Goethe University Frankfurt, 2019
Impact of cross-shareholdings in networks of firms under external shocks. Nils Bertschinger, Julian Stobbe (2018)
Consistency of potential energy in the dynamical vertex approximation
Published in Physical Review B, 2022
This paper extends the existing ladder dynamical vertex approximation to include consistency of the potential energies between one- and two-particle level. The effects near the antiferromagnetic phase transition in the Hubbard model on the 3D simple cubic lattice are discussed.
Recommended citation: Julian Stobbe, Georg Rohringer. (2022). "Consistency of potential energy in the dynamical vertex approximation" Physical Review B. 106.
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Two Particle Consistent Ladder Dynamical Vertex Approximation
Published in University Hamburg, 2025
PhD thesis in physics.
Mean Field Decoupling of Single Impurity Anderson Model through Auxiliary Majorana Fermions
Published in Annals of Physics, 2025
This paper introduces an approximate but computationally efficient method to study non-equilibrium dynamics of a 1D Anderson-impuritry chain.
Recommended citation: Irakli Titvinidze, Julian Stobbe, Alexey N. Rubtsov, Georg Rohringer. (2025). "Mean Field Decoupling of Single Impurity Anderson Model through Auxiliary Majorana Fermions." Annals of Physics. 474.
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teaching
Teaching experience 1
Undergraduate course, University 1, Department, 2014