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in correlation effects of itinerant metallic systems witnessed a remarkable growth
in the last few years because of two important developments. First, the
relevance of quantum-critical behavior in correlated electron systems was
reinvigorated by the discovery of new materials, which display unconventional
phases near quantum critical points (e.g. Fe pnictides). This revival of interest in quantum criticality triggered a new
set of ideas coming, at least partly, from scientists with background in
high-energy physics. Second, there is the growing effort worldwide to
understand the effects of the fermion-fermion interaction in fermionic vacua
with different topological properties, e.g., metallic surface states of topological
insulators, and Dirac and Weyl semi-metals. The communities working on quantum-critical
and topological systems are using the same experimental and theoretical methods,
yet they communicate with each other only infrequently and drift apart with
separate conferences, workshops, and
The goal of
the proposed workshop is to reverse the trend by bringing the members of the
two communities together at a focused workshop, where they could share and exchange
the ideas, and start new collaborations. We
deliberately restrict the topic of the workshop to itinerant electron systems
and leave equally interesting Mott physics aside in order to focus on the set
of issues addressed by both communities. Our plan is to have review talks by
leading specialists (experimentalists and theorists alike) on the most
outstanding unsolved problems, both in the area of quantum criticality in more
traditional strongly correlated materials, such as cuprates
and Fe-pnictides, as well as on the emergent classes of materials with
different classes of fermionic vacua, such
as Dirac and Weyl semimetals, where the issues of quantum criticality are only now beginning to be addressed. The
review talks will be followed by more specific talks
by scientists who are most actively working in either of the two fields or at
their intersection. We will specifically instruct the speakers to focus on the
“big picture” and open problems to promote discussions. We plan to leave at
least 15 minutes for discussions after each review talk and 10 minutes for
discussions after each research talks.
will primarily focus on the following issues:
theories of quantum criticality in metals;
2) Can quantum
criticality explain the linear-in-T resistivity observed in many nearly
Coulomb-driven exotic phases in topological materials, and Dirac and Weyl
semimetals; exotic phases
experimental discoveries in both areas and their interpretations.
problems on which the two communities can work together.
are encouraged to submit a poster, which will be displayed throughout workshop.
We will also schedule a one-hour slot for poster discussions, tentatively
scheduled for Tuesday, the second day of the workshop.
Batista (Tennessee), Andrey Chubukov (Minnesota), Dmitrii Maslov (U. of
Florida), Filip Ronning (Los Alamos)
Monday, August 15, 2016 - Friday, August 19, 2016 8:00 AM - 5:00 PMMountain Time
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SponsorsCenter for Nonlinear Studies, Los Alamos National Laboratory
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This event is brought to you by the Center for Nonlinear Studies at Los Alamos National Laboratory. This event has been declared "Open to the Public - with Registration".