title: Ground-state morphologies in the random-field Ising model: scaling properties and non-Porod behavior.
abstract: We use a computationally efficient graph-cut method (GCM) to obtain the ground-state morphologies (at zero temperature) of the random-field Ising model in d=2,3. The GCM enables us to obtain comprehensive numerical results on large-scale systems. We analyze the morphologies by computing correlation functions and structure factors. These quantities enable us to precisely evaluate characteristic properties, e.g., domain sizes, scaling functions, roughness exponents, fractal dimensions, etc.
authors.affiliation: Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India and School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
authors.forename: Gaurav P
authors.initials: GP
authors.lastname: Shrivastav
authors.affiliation: School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar
authors.affiliation: Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India.
authors.forename: Varsha
authors.initials: V
authors.lastname: Banerjee
authors.affiliation: School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
authors.forename: Sanjay
authors.initials: S
authors.lastname: Puri
mesh_terms: D059346:Magnets; D008962:Models, Theoretical; D013696:Temperature