We review results concerning the critical behavior of spin systems at equilibrium. We
consider the Ising and the general O (N)-symmetric universality classes, including the N→ 0 …

The effective experimental critical exponents α, γ, ν∥, and ν⊥ obtained from high-resolution
heat capacity and x-ray studies of nematic–smectic-A transitions in liquid crystals are …

Motivated by variety of realizations of the compact Lifshitz model, I predict and explore
properties of its three phases, study its phase transitions and derive its fractonic gauge dual …

We study smectic liquid crystals in random environments, eg, aerogel. A low-temperature
analysis reveals that even arbitrarily weak quenched disorder (ie, arbitrarily low aerogel …

Comprehensive x-ray scattering studies have characterized the smectic ordering of
octylcyanobiphenyl (8CB) confined in the hydrogen-bonded silica gels formed by aerosil …

Results from a high resolution calorimetric study for the alkylcyanobiphenyl liquid crystal
series nCB, with n the number of carbons in the alkyl chain, confined to the 0.2 μm diam …

High-resolution ac calorimetric studies show that the dispersion of 70-Å-diameter hydrophilic
silica spheres (aerosils) has a substantial effect on several liquid-crystal transitions in …

We construct a hydrodynamic theory of noisy, apolar active smectics in bulk suspension or
on a substrate. Unlike purely orientationally ordered active fluids, active apolar smectics can …

Liquid crystals offer many unique opportunities to study various phase transitions with
continuous symmetry in the presence of quenched random disorder (QRD). The QRD arises …

We compute the two-point correlation functions of general quadratic operators in the high-
temperature phase of the three-dimensional O (N) vector model by using field-theoretical …