QUANTUM
MANY-BODY
PHYSICS


Institute of
Solid State Physics
TU Wien


Group of Alessandro Toschi

OUTGOING TALKS

24-27 September 2018
Workshop on Quantum Many-body Methods in Condensed Matter Systems, Jülich, Germany

Breakdown of traditional many-body theories for correlated electrons: From vertex divergences to multiple solutions
Alessandro Toschi - invited talk

The limits of many-body perturbation theory - Irreducible vertex divergences and the multivaluedness of the Luttinger-Ward functional

Patrick Chalupa - poster presentation


17-21 September 2018
Autumn School on Correlated Electrons: DMFT - From Infinite Dimensions to Real Materials, Jülich, Germany

The limits of many-body perturbation theory - Irreducible vertex divergences and the multivaluedness of the Luttinger-Ward functional
Patrick Chalupa - poster presentation


28-31 August 2018
Lectiones Clitvmnaliæ on electronic correlations, Campello sul Clitunno, Italy


Irreducible vertex divergences: Insights from the Anderson Impurity Model

Patrick Chalupa - invited talk

Progresses in DGA: From the attractive case to its extensions to broken symmetry phases
Lorenzo del Re - invited talk

Osmates on the verge of a Hund's-Mott transition: The different fates of NaOsO3 and LiOsO3
Daniel Springer-  invited talk

Loop convergence of the response functions
Agnese Tagliavini - invited talk


2-6 July 2018
Bandstructure Meets Quantum Field Theory - CECAM School, Vienna, Austria

The limits of many-body perturbation theory - Irreducible vertex divergences and the multivaluedness of the Luttinger-Ward functional
Patrick Chalupa - poster presentation


23-25 May 2018
International Workshop on Electronic Structure of Superconductors and Novel Materials, Rome, Italy

Quantum dynamical screening of magnetic moments: From elemental metals to Fe-based superconductors
Alessandro Toschi - invited talk


4-6 April 2018
From Electrons to Phase Transitions ViCoM 2018, Vienna, Austria

The limits of many-body perturbation theory - Irreducible vertex divergences and the multivaluedness of the Luttinger-Ward functional
Patrick Chalupa - poster presentation


11-16 March 2018
DPG Spring Meeting, Berlin, Germany


Divergences of the irreducible vertex functions in correlated metallic systems: Insights from the Anderson Impurity Model

Patrick Chalupa - contributed talk

Dynamics of the magnetic moments in correlated metals: The case of Fe and Ni from ambient to Earth's core conditions
Alessandro Toschi- contributed talk


15-16 February 2018
Simons Collaboration on the Many Electron Problem Annual Meeting 2018, New York City, USA

The limits of many-body perturbation theory - Irreducible vertex divergences and the multivaluedness of the Luttinger-Ward functional
Patrick Chalupa - poster presentation


30 October-3 November 2017
652. Wilhelm und Else Heraeus-Seminar on "ab initio Electronic Structure Theory for Solids in the 21st Century", Bad Honnef, Germany

Dynamics of the magnetic moments in correlated metals: The case of Fe and Ni from ambient to Earth's core conditions
Alessandro Toschi - invited talk


20 October 2017
SFB ViCoM Workshop, Stadtschlaining, Austria


Multifaced manifestations of electronic correlations in the osmates: From NaOsO3 to LiOsO3

Daniel Springer - contributed talk


1-5 October 2017
FisMat 2017, italian national conference on the physics of matter, Tieste, Italy


Selective metamagnetism of multi-component fermions in optical lattices

Lorenzo Del Re - contributed talk


25-29 September 2017
Autumn School on Correlated Electrons: The Physics of Correlated Insulators, Metals and Superconductors, Jülich, Germany

Divergences of the irreducible vertex functions in correlated systems: The case of the Anderson Impurity model
Patrick Chalupa - poster presentation


19-22 September 2017
3rd international workshop on Dynamical Mean-Field approach for strongly correlated materials, Dresden, Germany

Breakdown of traditional many-body theories: From vertex divergences to "multiple solutions"
Alessandro Toschi - invited talk

Ladder-DGA for the attractive Hubbard model
Lorenzo Del Re - poster presentation


4-8 September 2017
NGSCES 2017: The New Generation in Strongly Correlated Electron Systems, Barcelona, Spain

Quantum dynamical screening of the local magnetic moment for different families of Fe-based superconductors

Clemens Watzenböck - poster presentation


6-9 June 2017
CECAM workshop: Green's function method - The next generation III, Toulouse, France

Breakdown of traditional many-body theories: From vertex divergences to "multiple solutions"
Alessandro Toschi - invited talk


31 May 2017
Ludwig Maximilian University of Munich (LMU) - Group of Prof. J. von Delft, Munich, Germany

Quantum many-body theory at the two-particle level: Challenges and new perspectives
Alessandro Toschi - invited seminar talk


19-24 March 2017
DPG Spring Meeting, Dresden, Germany


Breakdown of the many-body perturbation theory: Vertex divergences in the Anderson Impurity Model

Patrick Chalupa - contributed talk

The T-dependence of the scattering rate in cuprates: Insights from diagrammatic extensions of DMFT
Marie-Therese Philipp - contributed talk

Quantum criticality with a twist: interplay of strong correlations and Kohn anomalies in three dimensions
Thomas Schäfer - contributed talk

Parquet decomposition calculations of the electronic self-energy

Alessandro Toschi - contributed talk

Mott-Hubbard transition in the mass-imbalanced Hubbard model
Marie-Therese Philipp - poster presentation


20-23 February 2017
SFB ViCoM Winter School "Computational Magnetism", Vienna, Austria


The breakdown of many-body perturbation expansion: The case of the Anderson impurity model

Patrick Chalupa - poster presentation


9 January 2017
Seminar College de France (Antoine Georges), Paris, France

The physics underlying electronic spectra: from parquet decomposition to fluctuation diagnostics
Thomas Schäfer - invited talk


23-26 October 2016
CECAM workshop: Computational methods towards engineering novel correlated materials, Lausanne, Switzerland

Description of correlations at all length scales by means of the dynamical vertex approximation
Alessandro Toschi - invited talk


23 October 2016
SFB ViCoM Workshop, Vienna, Austria


The physics underlying electronic spectra: from parquet decomposition to fluctuation diagnostics

Thomas Schäfer - contributed talk


22-24 September 2016
Satellite international conference AMM-2016 "Ab-initio based modeling of advanced materials", Yekateringung, Russian Federation


Quantum many-body theory at the two-particle level

Alessandro Toschi - invited talk


29 August - 21 October 2016
Synergies between Mathematical and Computational Approaches to Quantum Many-Body Physics, Erwin Schrödinger International Institute for Mathematics and Physics, Vienna, Austria

3-7 October 2016 - Workshop

Quantum field theory at the two-particle level: Challenges and perspectives
Alessandro Toschi - invited talk

26-30 September 2016 - School
High-frequency asymptotics of the vertex function: diagrammatic parametrization and algorithmic implementation
Nils Wentzell - invited talk


14 June 2016
Workshop on multiple solutions in many-body theories, Paris, France


Irreducible vertex divergences: Non-Perturbative Landscape of the Mott-Hubbard transition

Thomas Schäfer - invited talk


9 June 2016
Vienna Young Scientists Symposium, TU Wien, Vienna, Austria


Fluctuation diagnostics of electronic spectra

Thomas Schäfer - contributed talk


11 April 2016
Condensed Matter Theory Seminar at SISSA, Trieste, Italy

Quantum many-body theory at the two-particle level

Alessandro Toschi - invited seminar talk


14-18 March 2016
APS March Meeting 2016, Baltimore, MD, USA

Dynamical Vertex Approximation for the Hubbard Model
Alessandro Toschi - invited talk

Magnetic transitions and quantum criticality in the three-dimensional Hubbard model
Thomas Schäfer - contributed talk


24-25 February 2016
FOR 1346: Young Scientists' Meeting, Würzburg, Germany

Fluctuation diagnostics of the electronic self-energy - origin of the pseudogap physics
Thomas Schäfer - poster presentation


26 November 2015
Seminar: Quantum many-body phenomena in the solid state, University of Würzburg, Germany

The Mott-Hubbard transition in (in)finite dimensions - divergent precursors and a sad fate
Thomas Schäfer - invited talk


16 November 2015
Solids4Fun Seminar, Vienna, Austria

Fluctuation diagnostics of the electron self-energy – origin of the pseudogap physics
Thomas Schäfer - contributed talk


29 September - 2 October 2015
DMFT 2015 - 2nd International Workshop on Dynamical Mean-Field Approach for Strongly Correlated Materials, Dresden, Germany

Quantum many-body theory at the two-particle level: The new frontier

Alessandro Toschi - invited talk


28 September - 2 October 2015
Korrelationstage 2015, Dresden, Germany

Fluctuation diagnostics of the electron self-energy: origin of the pseudogap physics
Georg Rohringer - contributed talk


25 September 2015
Hearing for the prolongation of the DK Solids4Fun, Vienna, Austria

Quantum phase transitions and criticality in strongly correlated electron systems
Thomas Schäfer - poster presentation


14-18 September 2015
NGSCES 2015: The New Generation in Strongly Correlated Electron Systems, Trogir, Croatia

Fluctuation diagnostics of the electron self-energy – origin of the pseudogap physics

Thomas Schäfer - contributed talk

The Fate of the Mott-Hubbard transition in 2D
Georg Rohringer - poster presentation


7-11 September 2015
LEE 2015 - Low Energy Electrons: Dynamics and Correlation near Surfaces and Nanostuctures, Hernstein, Austria

Fluctuation Diagnostics of the electron self-energy: Origin of the pseudogap physics
Georg Rohringer - invited talk


6-10 September 2015
PSI-K 2015 Conference, San Sebastian, Spain

Quantum many-body theory at the two-particle level: The new frontier
Alessandro Toschi - invited talk


1-4 September 2015
Annual meeting of the Austrian Physical Society, Vienna, Austria

Phase transitions and criticality of the Hubbard model in two and three dimensions
Thomas Schäfer - contributed talk


20-24 April 2015
Fermions 2015 - International Conference at IWH, Heidelberg, Germany


Correlated starting points for the functional renormalization group
Nils Wentzell, Ciro Taranto - poster presentation

Frequency structures in the 1PI vertex with fRGdyn
Ciro Taranto, Nils Wentzell - poster presentation


16-20 March 2015
DPG Spring Meeting, Berlin, Germany


What is the fate of the Mott metal-insulator transition in two dimensions?
Thomas Schäfer - contributed talk

Critical analysis of the preformed pair physics: the attractive Hubbard model under a paring forcing field

Agnese Tagliavini - contributed talk

From infinite to two dimensions through the functional renormalization group
Ciro Taranto - contributed talk

Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
Alessandro Toschi - contributed talk

Correlated starting points for the functional renormalization group
Nils Wentzell - contributed talk


7-10 March 2015
Seminar talk at the University of Bristol, Bristol, United Kingdom


Quantum many-body theory at the two-particle level: The new frontier

Alessandro Toschi - invited seminar talk


11-12 February 2015
FOR 1346: Young Scientists' meeting, Würzburg, Germany


The Mott-Hubbard transition in (in)finite dimensions: precursors and a sad fate
Thomas Schäfer - contributed talk


16-18 December 2014
Seminar talk at Max Planck Institute for Solid State Research
, Stuttgart, Germany


Fluctuation Diagnostics of the electron self-energy: Origin of the pseudogap physics
Georg Rohringer - invited seminar talk


29 October - 4 November 2014
University of Roma "La Sapienza", Rome, Italy

Divergent precursors of the Mott-Hubbard transition at the two-particle level
Alessandro Toschi - invited seminar talk


23-29 October 2014
IUMRS-ICYRAM 2014:
International Conference of Young Researchers on Advanced Materials sponsored by the International Union of Materials Research Societies, Haikou, China


Quantum many-body theory at the two-particle level: The new frontier
Alessandro Toschi - invited keynote talk


20-24 October 2014
Seminar talk at SISSA, Trieste, Italy


From Infinite to Two Dimensions through the Functional Renormalization Group
Ciro Taranto - invited seminar talk


20 October 2014
Solids4Fun Student Seminar, TU Vienna, Austria

The Murder of the MIT - Fate of a Paradigm of Strongly Correlated Electron Systems in 2D
Thomas Schäfer - seminar talk


22-26 September 2014
ERG
2014 - 7th International Conference on the Exact Renormalization Group, Lefkada Island, Greece


From Infinite to Two Dimensions through the Functional Renormalization Group
Alessandro Toschi - invited talk


18-23 August 2014
QCM14 - Quantum Critical Matter - From Atoms To Bulk, Obergurgl, Austria


Fate of the Mott metal-insulator transition in the two-dimensional Hubbard Model

Thomas Schäfer - poster presentation


14-18 July 2014
Solids4Fun Summer School, Hernstein, Austria


Fate of the Mott-Hubbard transition in two dimensions
Thomas Schäfer - poster presentation


1-2 July 2014
Workshop of the DFG Research Group FOR 723
Functional Renormalization Group for Correlated Fermion Systems, Vienna, Austria


Fate of the Mott transition in the 2D Hubbard model
Thomas Schäfer - contributed talk

DMFT-enhanced FRG: new ideas and perspectives
Ciro Taranto - contributed talk


30 June - 2 July 2014
Ψ-k  Workshop: Strong electron correlation effects in complex d- and f-based magnetic materials for technological applications, Prague, Czech Republic


Diagrammatic routes to nonlocal electronic correlations
Georg Rohringer - invited talk


16-20 June 2014
NGSCES 2014: The New Generation in Strongly Correlated Electron Systems 2014, Nice, France


Tuning magnetic correlations in graphene nano‐flake

Angelo Valli - contributed talk

Nonlocal correlations and criticality in 3 dimensions beyond the weak‐coupling regime
Georg Rohringer - contributed talk

Understanding Electronic Scattering beyond Fermi‐liquid Theory: from Pseudogap Phases to the MIT
Thomas Schäfer - contributed talk


22 April 2014
ViCoM Young Researchers Meeting 2014
, Vienna, Austria

Divergent precursors of the Mott metal-insulator transition in DMFT and beyond
Thomas Schäfer - contributed talk


8 April 2014
Seminar talk at Max Planck Insitute for Solid State Research, Stuttgart, Germany


Quantum many-body theory at the two-particle level: The new frontier
Alessandro Toschi - invited talk


30 March - 4 April 2014
DPG Spring Meeting, Dresden, Germany

One-particle irreducible functional approach: A route to diagrammatic extensions of the dynamical mean-field theory
Georg Rohringer - contributed talk

Divergent precursors of the Mott metal-insulator transition in dynamical mean field theory and beyond
Thomas Schäfer - contributed talk

From infnite to two dimensions through the functional renormalization group
Alessandro Toschi - contributed talk


25 March 2014
Colloquium talk at TU Graz, Austria

The Mott-Hubbard metal-insulator transition in V2O3 revisited
Alessandro Toschi - invited talk


16-26 March 2014
Seminar talk at the University of Michigan, Ann Arbor, USA


Diagrammatic routes towards a theoretical treatment of nonlocal electronic correlations
Georg Rohringer - invited seminar talk


5-12 March 2014
Seminar talk at SISSA, Trieste, Italy

Diagrammatic routes towards a theoretical treatment of nonlocal electronic correlations
Georg Rohringer - invited seminar talk


26-28 February 2014
ViCoM Conference: From Electrons to Phase Transitions, Vienna, Austria


Quantum many-body theory at the two-particle level: The new frontier
Alessandro Toschi - invited talk

Critical behavior of the three-dimensional Hubbard model
Georg Rohringer - poster presentation

Divergent precursors of the Mott metal-insulator transition in dynamical mean field theory and beyond
Thomas Schäfer - poster presentation

Non-local spatial correlations in low-dimensional nanostructures
Angelo Valli - poster presentation