152 citations · 821 across the 23 of their papers we have counts for
23 papers
Anomalous chiral transport with vorticity and torsion: Cancellation of two mixed gravitational anomaly currents in rotating chiral Weyl condensates
J. Nissinen, G. E. Volovik
Relativistic gravitational anomalies lead to anomalous transport coefficients that can be activated at finite temperature in condensed matter systems with gapless fermions. The chi…
Nonlinear two-level dynamics of quantum time crystals
Samuli Autti, Petri J Heikkinen, Jaakko Nissinen +4
A time crystal is a macroscopic quantum system in periodic motion in its ground state, stable only if isolated from energy exchange with the environment. For this reason, coupling…
Field theory of higher-order topological crystalline response, generalized global symmetries and elasticity tetrads
Jaakko Nissinen
We discuss the higher-order topological field theory and response of topological crystalline insulators with no other symmetries. We show how the topology and geometry of the syste…
Torsional Landau levels and geometric anomalies in condensed matter Weyl systems
Sara Laurila, Jaakko Nissinen
We consider the role of coordinate dependent tetrads ("Fermi velocities"), momentum space geometry, and torsional Landau levels (LLs) in condensed matter systems with low-energy We…
Topological polarization, dual invariants, and surface flat band in crystalline insulators
J. Nissinen, Tero T. Heikkila, G. E. Volovik
We describe a three-dimensional crystalline topological insulator (TI) phase of matter that exhibits spontaneous polarization. This polarization results from the presence of (appro…
On thermal Nieh-Yan anomaly in topological Weyl materials
J. Nissinen, G. E. Volovik
We discuss the possibility of a gravitional Nieh-Yan anomaly of the type in topological Weyl materials, where is temperature…
On thermal Nieh-Yan anomaly in Weyl superfluids
J. Nissinen, G. E. Volovik
We discuss the possibility of the torsional Nieh-Yan anomaly of the type in Weyl superfluids, where is temperature and ${\cal T}…
Emergent spacetime and gravitational Nieh-Yan anomaly in chiral Weyl superfluids and superconductors
Jaakko Nissinen
Momentum transport is anomalous in chiral superfluids and superconductors in the presence of textures and superflow. Using the gradient expansion of the semi-classical appro…
Elasticity tetrads, mixed axial-gravitational anomalies, and 3+1d quantum Hall effect
J. Nissinen, G. E. Volovik
For two-dimensional topological insulators, the integer and intrinsic (without external magnetic field) quantum Hall effect is described by the gauge anomalous (2+1)-dimensional [2…
Half-quantum vortices and walls bounded by strings in the polar-distorted phases of topological superfluid He
J. T. Mäkinen, V. V. Dmitriev, J. Nissinen +5
Symmetries of the physical world have guided formulation of fundamental laws, including relativistic quantum field theory and understanding of possible states of matter. Topologica…
Tetrads in solids: from elasticity theory to topological quantum Hall systems and Weyl fermions
J. Nissinen, G. E. Volovik
Theory of elasticity in topological insulators has many common features with relativistic quantum fields interacting with gravitational field in the tetrad form. Here we discuss se…
Dimensional crossover of effective orbital dynamics in polar distorted 3He-A: Transitions to anti-spacetime
J. Nissinen, G. E. Volovik
Topologically protected superfluid phases of He allow one to simulate many important aspects of relativistic quantum field theories and quantum gravity in condensed matter. Her…
Effective Minkowski to Euclidean signature change of the magnon BEC pseudo-Goldstone mode in polar 3He
J. Nissinen, G. E. Volovik
We discuss the effective metric experienced by the Nambu-Goldstone mode propagating in the broken symmetry spin-superfluid state of coherent precession of magnetization. This colle…
Dual gauge field theory of quantum liquid crystals in three dimensions
Aron J. Beekman, Jaakko Nissinen, Kai Wu +1
The dislocation-mediated quantum melting of solids into quantum liquid crystals is extended from two to three spatial dimensions, using a generalization of boson-vortex or Abelian-…
Type-III and IV interacting Weyl points
J. Nissinen, G. E. Volovik
3+1-dimensional Weyl fermions in interacting systems are described by effective quasi-relativistic Green's functions parametrized by a 16 element matrix in an expansion aro…
Hierarchy of orientational phases and axial anisotropies in the gauge theoretical description of generalized nematics
Ke Liu, Jaakko Nissinen, Josko de Boer +2
The paradigm of spontaneous symmetry breaking encompasses the breaking of the rotational symmetries of isotropic space to a discrete subgroup, i.e. a three-dimensional point…
Classification of point-group-symmetric orientational ordering tensors
Jaakko Nissinen, Ke Liu, Robert-Jan Slager +2
The concept of symmetry breaking has been a propelling force in understanding phases of matter. While rotational symmetry breaking is one of the most prevalent examples, the rich l…
Dual gauge field theory of quantum liquid crystals in two dimensions
Aron J. Beekman, Jaakko Nissinen, Kai Wu +5
We present a self-contained review of the theory of dislocation-mediated quantum melting at zero temperature in two spatial dimensions. The theory describes the liquid-crystalline…
Generalized liquid crystals: giant fluctuations and the vestigial chiral order of , and matter
Ke Liu, Jaakko Nissinen, Robert-Jan Slager +2
The physics of nematic liquid crystals has been subject of intensive research since the late 19th century. However, because of the limitations of chemistry the focus has been cente…
Classification of nematic order in 2+1D: Dislocation melting and lattice gauge theory
Ke Liu, Jaakko Nissinen, Zohar Nussinov +3
Nematic phases, breaking spontaneously rotational symmetry, provide for ubiquitously observed states of matter in both classical and quantum systems. These nematic states may be fu…
The quantum Hall curve
J. Nissinen, C. A. Lütken
We show how the modular symmetries that have been found to be consistent with most available scaling data from quantum Hall systems, derive from a rigid family of algebraic curves…
Local height probabilities in a composite Andrews-Baxter-Forrester model
Jaakko Nissinen, Eddy Ardonne
We study the local height probabilities in a composite height model, derived from the restricted solid-on-solid model introduced by Andrews, Baxter and Forrester, and their connect…
An RG potential for the quantum Hall effects
J. Nissinen, C. A. Lütken
The phenomenological analysis of fully spin-polarized quantum Hall systems, based on holomorphic modular symmetries of the renormalization group (RG) flow, is generalized to more c…