Research
Research Interests
Statistical Mechanics
Condensed Matter Physics
Disordered Systems
Soft Matter Physics
Physical Chemistry
Applied Mathematics
Computational Methods
Postdoctoral Researchers
Dr Alexandros Vasilopoulos, School of Mathematics, Statistics and Actuarial Science, University of Essex, UK (2024 - 2026)
Dr Erol Vatansever, Centre for Fluid and Complex Systems, Coventry University, UK (2021 - 2022)
PhD Students
Dimitrios Mataragkas: Numerical investigations of pure and disordered Ising and Blume-Capel spin lattice models, School of Mathematics, Statistics and Actuarial Science, University of Essex, UK (in progress, as director of studies)
Leila Moueddene: Tricriticality in the Blume-Capel model at high dimensions, Centre for Fluid and Complex Systems, Coventry University, UK (in progress, as second supervisor)
Alexandros Vasilopoulos: Universality and dynamical behaviour in pure and disordered spin-1 models, Centre for Fluid and Complex Systems, Coventry University, UK (completed in 2024, as director of studies)
Michail Akritidis: Percolation properties of ferromagnetic and frustrated replicated Ising models, Centre for Fluid and Complex Systems, Coventry University, UK (completed in 2023, as director of studies).
Argyro Mainou: Scaling and universality in the random-field Ising model, Centre for Fluid and Complex Systems, Coventry University, UK (completed in 2021, as director of studies)
Ravinder Kumar: Computer simulation studies of frustrated spin systems, Department of Mathematics and Physics, Coventry University, UK (completed in 2019, as second supervisor)
Eren Metin Elcie: Algorithmic and geometric aspects of the random-cluster model, Department of Mathematics and Physics, Coventry University, UK (completed in 2015, as second supervisor)
Publications
83) Thermodynamic properties of disordered quantum spin laddersE. Vatansever, G.G. Grahovski, and N.G. Fytas
82) Critical and tricritical singularities from small-scale Monte Carlo simulations: The Blume-Capel model in two dimensions
L. Moueddene, N.G. Fytas, Y. Holovatch, R. Kenna, and B. Berche
81) Finite-size scaling of the random-field Ising model above the upper critical dimension
N.G. Fytas, V. Martin-Mayor, G. Parisi, M. Picco, and N. Sourlas
80) Geometric clusters in the overlap of the Ising model
M. Akritidis, N.G. Fytas, and M. Weigel
79) Critical dynamical behavior of the Ising model
Z. Liu, E. Vatansever, G.T. Barkema, and N.G. Fytas
78) Two-dimensional dilute Baxter-Wu model: Transition order and universality
A.R.S. Macedo, A. Vasilopoulos, M. Akritidis, J.A. Plascak, N.G. Fytas, and M. Weigel
77) Disorder effects on the metastability of classical Heisenberg ferromagnets
M. Naskar, M. Acharyya, E. Vatansever, and N.G. Fytas
76) Transient behavior of damage spreading in the two-dimensional Blume-Capel ferromagnet
A. Bhowal Acharyya, M. Acharyya, E. Vatansever, and N.G. Fytas
75) Universality in the two-dimensional dilute Baxter-Wu model
A. Vasilopoulos, N.G. Fytas, E. Vatansever, A. Malakis, and M. Weigel
74) Determination of the recombination coefficient in electrolytic solutions from impedance spectroscopy measurements
G. Barbero, N.G. Fytas, I. Lelidis, J.V. da Silva Andrade, F.C.M. Freire, and A.J. Santana
73) Efficient algorithms for computing the ground states of the 2D random-field Ising model
A. Mainou, N.G. Fytas, and M. Weigel
72) Corrections to scaling in geometrical clusters of the 2D Ising model
M. Akritidis, N.G. Fytas, and M. Weigel
71) Multicanonical simulations of the spin-1 Baxter-Wu model in a crystal field
N.G. Fytas, A. Vasilopoulos, E. Vatansever, A. Malakis, and M. Weigel
70) (Editorial) XXXII IUPAP Conference on Computational Physics
D. Foster, N.G. Fytas, C. del Genio, R. Holtzman, A. Kumar, S. Horn, A. Potherat, M. Weigel, and T. Yavorskyi
69) Monte Carlo study of the two-dimensional kinetic Blume-Capel model in a quenched random crystal field
A. Vasilopoulos, Z. Demir Vatansever, E. Vatansever, and N.G. Fytas
68) Metastable behavior of the spin-s Ising and Blume-Capel ferromagnets: A Monte Carlo study
M. Naskar, M. Acharyya, E. Vatansever, and N.G. Fytas
67) Ising universality in the two-dimensional Blume-Capel model with quenched random crystal field
E. Vatansever, Z. Demir Vatansever, P.E. Theodorakis, and N.G. Fytas
66) Mixing-demixing transition in polymer-grafted spherical nanoparticles
P. Yatsyshin, N.G. Fytas, and P.E. Theodorakis
65) On the critical exponent α of the 5D random-field Ising model
N.G. Fytas, V. Martin-Mayor, G. Parisi, M. Picco, and N. Sourlas
64) Evidence for supersymmetry in the random-field Ising model at D = 5
N.G. Fytas, V. Martin-Mayor, G. Parisi, M. Picco, and N. Sourlas
Phys. Rev. Lett. 122, 240603 (2019)
63) Monte Carlo study of the interfacial adsorption of the Blume-Capel model
N.G. Fytas, A. Mainou, P.E. Theodorakis, and A. Malakis
Phys. Rev. E 99, 012111 (2019)
62) Review of recent developments in the random-field Ising model
N.G. Fytas, V. Martin-Mayor, M. Picco, and N. Sourlas
J. Stat. Phys. 172, 665 (2018)
61) Dynamic phase transitions in the presence of quenched randomness
E. Vatansever and N.G. Fytas
Phys. Rev. E 97, 062146 (2018)
60) Universality from disorder in the random-bond blume-Capel model
N.G. Fytas, J. Zierenberg, P.E. Theodorakis, M. Weigel, W. Janke, and A. Malakis
Phys. Rev. E 97, 040102(R) (2018)
59) Dynamic phase transition of the Blume-Capel model in an oscillating magnetic field
E. Vatansever and N.G. Fytas
Phys. Rev. E 97, 012122 (2018)
58) Restoration of dimensional reduction in the random-field Ising model at five dimensions
N.G. Fytas, V. Martin-Mayor, M. Picco, and N. Sourlas
Phys. Rev. E 95, 042117 (2017)
57) Scaling and universality in the phase diagram of the 2D Blume-Capel model
J. Zierenberg, N.G. Fytas, M. Weigel, W. Janke, and A. Malakis
Eur. Phys. J. Special Topics 226, 789 (2017)
56) (Editorial) Recent advances in phase transitions and critical phenomena
M. Bachmann, E. Bittner, N.G. Fytas, R. Kenna, M. Weigel, and J. Zierenberg
Eur. Phys. J. Special Topics 226, 533 (2017)
55) Specific-heat exponent and modified hyperscaling in the 4D random-field Ising model
N.G. Fytas, V. Martin-Mayor, M. Picco, and N. Sourlas
54) Interfacial adsorption in 2D pure and random-bond Potts models
N.G. Fytas, P.E. Theodorakis, and A. Malakis
Phys. Rev. E 95, 032126 (2017)
53) Revisiting the scaling of the specific heat of the three-dimensional random-field Ising model
N.G. Fytas, P.E. Theodorakis, and A.K. Hartmann
Eur. Phys. J. B 89, 200 (2016)
52) Efficient numerical methods for the random-field Ising model: Finite-size scaling, reweighting extrapolation, and computation of response functions
N.G. Fytas and V. Martin-Mayor
Phys. Rev. E 93, 063308 (2016)
51) Geometry effects in the magnetoconductance of normal and Andreev Sinai billiards
N.G. Fytas
Eur. Phys. J. B 89, 148 (2016)
50) Phase transitions in disordered systems: the example of the random-field Ising model in four dimensions
N.G. Fytas, V. Martin-Mayor, M. Picco, and N. Sourlas
Phys. Rev. Lett. 116, 227201 (2016)
49) Connectivity properties of the random-cluster model
M. Weigel, E.M. Elcie, and N.G. Fytas
J. Phys.: Conf. Ser. 681, 01201 (2016)
48) Bridges in the random-cluster model
E.M. Elcie, M. Weigel, and N.G. Fytas
47) Universality in four-dimensional random-field magnets
N.G. Fytas and P.E. Theodorakis
Eur. Phys. J. B 88, 205 (2015)
46) Interfacial adsorption in Potts model on the square lattice
N.G. Fytas, A. Malakis, W. Selke, and L.N. Shchur
Eur. Phys. J. B 88, 204 (2015)
45) Self-assembly of DNA-functionalized colloids
P.E. Theodorakis, N.G. Fytas, G, Kahl, and C. Dellago
Condensed Matter Physics 18, 22801 (2015)
44) Critical aspects of three-dimensional anisotropic spin-glass models
T. Papakonstantinou, N.G. Fytas, A. Malakis, and I. Lelidis
43) Parallel multicanonical study of the three-dimensional Blume-Capel model
J. Zierenberg, N.G. Fytas, and W. Janke
Phys. Rev. E 91, 032126 (2015)
42) Fragmentation of fractal random structures
E.M. Elcie, M. Weigel, and N.G. Fytas
Phys. Rev. Lett. 114, 115701 (2015)
41) Random-field Ising model: Insight from zero-temperature simulations
P.E. Theodorakis and N.G. Fytas
Condensed Matter Physics 17, 43003 (2014)
40) Critical Binder cumulant and universality: Fortuin-Kasteleyn clusters and order-parameter fluctuations
A. Malakis, N.G. Fytas, and G. Gulpinar
Phys. Rev. E 89, 042103 (2014)
39) Phase behavior of two-component bottle-brush polymers with flexible backbones under poor solvent conditions
N.G. Fytas and P.E. Theodorakis
Materials Research Express 1, 015301 (2014)
38) Wetting and interfacial adsorption in the Blume-Capel model on the square lattice
N.G. Fytas and W. Selke
Eur. Phys. J. B 86, 365 (2013)
37) Universality in the three-dimensional random-field Ising model
N.G. Fytas and V. Martin-Mayor
Phys. Rev. Lett. 110, 227201 (2013)
36) Molecular dynamics simulations of single-component bottle-brush polymers with flexible backbones under poor solvent conditions
N.G. Fytas and P.E. Theodorakis
J. Phys.: Condens. Matter 25, 285105 (2013)
35) Critical aspects of the random-field Ising model
N.G. Fytas, P.E. Theodorakis, I. Georgiou, and I. Lelidis
Eur. Phys. J. B 86, 268 (2013)
34) Fluctuations and criticality in the random-field Ising model
P.E. Theodorakis, I. Georgiou, and N.G. Fytas
Phys. Rev. E 87, 032119 (2013)
33) Universality aspects of the 2d random-bond Ising and 3d Blume-Capel models
N.G. Fytas and P.E. Theodorakis
32) Light scattering by a metallic nanoparticle coated with a nematic liquid crystal
V. Yannopapas, N. Fytas, V. Kyrimi, E. Kallos, A.G. Vanakaras, and D.J. Photinos
Phys. Stat. Sol. A 210, 335 (2013)
31) Universality aspects of the trimodal random-field Ising model
N.G. Fytas, P.E. Theodorakis, and I. Georgiou
Eur. Phys. J. B 85, 349 (2012)
30) Quantum Monte Carlo simulations revisited: The case of anisotropic Heisenberg chains
P. Androvitsaneas, N.G. Fytas, E. Paspalakis, and A.F. Terzis
Philosophical Magazine 92, 4649 (2012)
29) Monte Carlo study of the triangular Blume-Capel model under bond randomness
P.E. Theodorakis and N.G. Fytas
Phys. Rev. E 86, 011140 (2012)
28) Universality aspects of the d=3 random-bond Blume-Capel model
A. Malakis, A.N. Berker, N.G. Fytas, and T. Papakonstantinou
Phys. Rev. E 85, 061106 (2012)
27) A study of the static properties of symmetric linear multiblock copolymers under poor solvent conditions
P.E. Theodorakis and N.G. Fytas
J. Chem. Phys. 136, 094902 (2012)
26) Wang-Landau study of the 3D Ising model with bond disorder
P.E. Theodorakis and N.G. Fytas
Eur. Phys. J. B 81, 245 (2011)
25) Analysis of the static properties of cluster formations in symmetric linear multiblock copolymers
N.G. Fytas and P.E. Theodorakis
J. Phys.: Condens. Matter 23, 235106 (2011)
24) Phase behavior of symmetric linear multiblock copolymers
P.E. Theodorakis and N.G. Fytas
Europhys. Lett. 93, 43001 (2011)
23) Wang-Landau study of the triangular Blume-Capel ferromagnet
N.G. Fytas
22) Scaling and self-averaging in the three-dimensional random-field Ising model
N.G. Fytas and A. Malakis
21) Microphase separation in linear multiblock copolymers under poor solvent conditions
P.E. Theodorakis and N.G. Fytas
20) Universality in disordered systems: The case of the three-dimensional random-bond Ising model
N.G. Fytas and P.E. Theodorakis
19) Uncovering the secrets of the 2D random-bond Blume-Capel model
A. Malakis, A.N. Berker, I.A. Hadjiagapiou, N.G. Fytas, and T. Papakonstantinou
18) Wang-Landau study of the 2d random-bond Blume-Capel model
A. Malakis, A.N. Berker, I.A. Hadjiagapiou, and N.G. Fytas
Physics Procedia 3, 1443 (2010)
17) Multicritical points and crossover mediating the strong violation of universality: Wang-Landau determinations in the random-bond d=2 Blume-Capel model
A. Malakis, A.N. Berker, I.A. Hadjiagapiou, N.G. Fytas, and T. Papakonstantinou
Phys. Rev. E 81, 041113 (2010)
16) Critical behavior of the pure and random-bond two-dimensional triangular Ising ferromagnet
N.G. Fytas and A. Malakis
Phys. Rev. E 81, 041109 (2010)
15) Criticality in the randomness-induced second-order phase transition of the triangular Ising antiferromagnet with nearest- and next-nearest-neighbor interactions
N.G. Fytas and A. Malakis
14) Strong violation of critical phenomena universality: Wang-Landau study of the two-dimensional Blume-Capel model under bond randomness
A. Malakis, A.N Berker, I.A. Hadjiagapiou, and N.G. Fytas
Phys. Rev. E 79, 011125 (2009)
13) Quenched bond randomness in marginal and non-marginal 2D Ising spin models
N.G. Fytas, A. Malakis, and I.A. Hadjiagapiou
J. Stat. Mech.: Theory Exp. (2008) P11009
12) Wang-Landau study of the random bond square Ising model with nearest- and next-nearest neighbor interactions
N.G. Fytas, A. Malakis, and I. Georgiou
J. Stat. Mech.: Theory Exp. (2008) L07001
11) First-order transition features of the 3D bimodal random-field Ising model
N.G. Fytas, A. Malakis, and K. Eftaxias
J. Stat. Mech.: Theory Exp. (2008) P03015
10) Phase diagram of the 3D bimodal random-field Ising model
N.G. Fytas and A. Malakis
Eur. Phys. J. B 61, 111 (2008)
9) First-order transition features of the triangular Ising model with nearest- and next-nearest-neighbor antiferromagnetic interactions
A. Malakis, N.G. Fytas, and P. Kalozoumis
8) Thermal critical behavior and universality aspects of the three-dimensional random-field Ising model
A. Malakis and N.G. Fytas
Eur. Phys. J. B 51, 257 (2006)
7) Universal features and tail analysis of the order-parameter distribution of the two-dimensional Ising model: An entropic sampling Monte Carlo study
A. Malakis and N.G. Fytas
Phys. Rev. E 73, 056114 (2006)
6) A new comprehensive study of the 3D random-field Ising model via sampling the density of states in dominant energy subspaces
N.G. Fytas and A. Malakis
5) The CrMES scheme as an alternative to importance sampling: The tail regime of the order-parameter distribution
A. Malakis and N.G. Fytas
4) Lack of self-averaging of the specific heat in the three-dimensional random-field Ising model
A. Malakis and N.G. Fytas
Phys. Rev. Ε 73, 016109 (2006)
3) Entropic sampling via Wang-Landau random walks in dominant energy subspaces
A. Malakis, S.S. Martinos, I.A. Hadjiagapiou, N.G. Fytas, and P. Kalozoumis
Phys. Rev. E 72, 066120 (2005)
2) Magnetic-field dependence of transport in normal and Andreev billiards: A classical interpretation of the averaged quantum behavior
N.G. Fytas, F.K. Diakonos, P. Schmelcher, M. Scheid, A. Lassl, K. Richter, and G. Fagas
Phys. Rev. B 72, 085336 (2005)
1) Estimation of critical behavior from the density of states in classical statistical models
A. Malakis, A. Peratzakis, and N.G. Fytas