M. C. Diamantini

ORCID: 0000-0002-2164-6711
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About
Contact & Profiles
Research Areas
  • Physics of Superconductivity and Magnetism
  • Quantum and electron transport phenomena
  • Topological Materials and Phenomena
  • Quantum many-body systems
  • Cold Atom Physics and Bose-Einstein Condensates
  • Quantum, superfluid, helium dynamics
  • Black Holes and Theoretical Physics
  • Advanced Thermodynamics and Statistical Mechanics
  • Quantum Chromodynamics and Particle Interactions
  • Neural dynamics and brain function
  • Quantum Computing Algorithms and Architecture
  • Advanced Condensed Matter Physics
  • Magnetic properties of thin films
  • Cosmology and Gravitation Theories
  • Theoretical and Computational Physics
  • Atomic and Subatomic Physics Research
  • Magnetic and transport properties of perovskites and related materials
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Neural Networks and Applications
  • Noncommutative and Quantum Gravity Theories
  • stochastic dynamics and bifurcation
  • Graphene research and applications
  • Advanced Memory and Neural Computing
  • Quantum Information and Cryptography

University of Perugia
2016-2025

SwissScientific Technologies (Switzerland)
2022

Terra Quantum (Switzerland)
2022

Universidade Estadual de Campinas (UNICAMP)
2022

Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
1992-2019

Istituto Nazionale di Fisica Nucleare
2010-2014

University of Salerno
2014

European Organization for Nuclear Research
1996-2013

Freie Universität Berlin
1999-2000

University of Oxford
2000

Magnetic monopoles, though elusive as elementary particles, emerge quantum excitations in granular materials. Under certain conditions, they can undergo Bose condensation, leading to the formation of a novel state matter known superinsulator. In this state, charge carriers, Cooper pairs and anti-Cooper pairs, are bound together by an electric flux string, forming neutral pions. This confinement mechanism results infinite resistance that persists even at finite temperatures. Superinsulators...

10.3390/condmat10020020 article EN cc-by Condensed Matter 2025-04-01

Abstract One of the most profound aspects standard model particle physics, mechanism confinement binding quarks into hadrons, is not sufficiently understood. The only known semiclassical confinement, mediated by chromo-electric strings in a condensate magnetic monopoles still lacks experimental evidence. Here we show that infinite resistance superinsulating state, which emerges on insulating side superconductor-insulator transition superconducting films offers realization allows for direct...

10.1038/s42005-018-0073-9 article EN cc-by Communications Physics 2018-10-31

A low-temperature intervening metallic regime arising in the two-dimensional superconductor-insulator transition challenges our understanding of electronic fluids. Here we develop a gauge theory revealing that this emergent anomalous metal is bosonic topological insulator where bulk transport suppressed by mutual statistics interactions between out-of-condensate Cooper pairs and vortices longitudinal conductivity mediated symmetry-protected gapless edge modes. We explore...

10.1016/j.physleta.2020.126570 article EN cc-by-nc-nd Physics Letters A 2020-05-19

10.1140/epjb/e2006-00345-0 article EN The European Physical Journal B 2006-09-01

Superconductivity remains one of most fascinating quantum phenomena existing on a macroscopic scale. Its rich phenomenology is usually described by the Ginzburg-Landau (GL) theory in terms order parameter, representing wave function superconducting condensate. The GL addresses prime properties, screening electromagnetic field because it becomes massive within superconductor, famous Anderson-Higgs mechanism. Here authors describe another widely-spread type superconductivity where mechanism...

10.1002/advs.202206523 article EN cc-by Advanced Science 2023-03-25

Abstract The key to unraveling the nature of high‐temperature superconductivity (HTS) lies in resolving enigma pseudogap state. state underdoped region is a distinct thermodynamic phase characterized by nematicity, temperature‐quadratic resistive behavior, and magnetoelectric effects. Till present, general description observed universal features their connection with HTS lacking. proposed work constructs unifying effective field theory capturing all characteristics materials explaining...

10.1002/qute.202000135 article EN cc-by-nc-nd Advanced Quantum Technologies 2021-02-10

We provide a microscopic-level derivation of earlier results showing that in the critical vicinity superconductor-to-insulator transition (SIT), disorder and localization become negligible structure emergent phases is determined by topological effects arising from competition between two quantum orders, superconductivity superinsulation. find around point ground state composite incompressible fluid Cooper pairs vortices coexisting with an intertwined Wigner crystal comprising excesses both...

10.1103/physrevb.103.174516 article EN Physical review. B./Physical review. B 2021-05-25

We construct a lattice model of compact (2+1)-dimensional Maxwell-Chern-Simons theory, starting from its formulation in terms gauge invariant quantities proposed by Deser and Jackiw. thereby identify the topological excitations their interactions. These consist monopole-antimonopole pairs bounded strings carrying both magnetic flux electric charge. The charge renders Dirac observable endows them with finite energy per unit length, which results linearly confining string tension....

10.1103/physrevlett.71.1969 article EN Physical Review Letters 1993-09-27

We present a new Higgsless model of superconductivity, inspired from anyon superconductivity but P- and T-invariant generalizable to any dimension. While the original mechanism was based on incompressible quantum Hall fluids as average field states, our involves topological insulators states. In D space dimensions it (D-1)-form fictitious pseudovector gauge which originates condensation defects in compact low-energy effective BF theories. approximation, corresponding uniform emergent charge...

10.1016/j.nuclphysb.2014.12.010 article EN cc-by Nuclear Physics B 2014-12-12

A bstract Planar superconductors, emerging in thin films with thickness comparable to the superconducting coherence length, differ crucially from their bulk counterparts. Coulomb interactions between charges are logarithmic up distances typical sample sizes and Anderson-Higgs mechanism is ineffective screen infrared divergences of resulting (2+1)-dimensional QED because Pearl length screening vortex also typically larger than size. As a result, system decomposes into droplets size order...

10.1007/jhep10(2022)100 article EN cc-by Journal of High Energy Physics 2022-10-17

Abstract Despite decades-long efforts, magnetic monopoles were never found as elementary particles. Monopoles and associated currents directly measured in experiments identified topological quasiparticle excitations emergent condensed matter systems. These the related electric-magnetic symmetry restricted to classical electrodynamics, with behaving Here we show that is most fundamental extends full quantum behavior. We demonstrate at low temperatures can form a Bose condensate dual charge...

10.1038/s42005-021-00531-5 article EN cc-by Communications Physics 2021-02-15

The nature of hadrons is one the most fundamental mysteries physics. It generally agreed that they are made "colored" quarks, which move nearly free at short scales but confined inside by strong interactions large distances. Because confinement, quarks never directly observable and, experimentally, their properties can be tested only indirectly, via high energy collisions. Here we show superinsulating films realize a complete, one-color model system hadron physics with Cooper pairs playing...

10.1038/s42005-020-00410-5 article EN cc-by Communications Physics 2020-08-20

Electric-magnetic duality or S-duality, extending the symmetry of Maxwell's equations by including between Noether electric charges and topological magnetic monopoles, is one most fundamental concepts modern physics. In two-dimensional systems harboring Cooper pairs, S-duality manifests in emergence superinsulation, a state dual to superconductivity, which exhibits an infinite resistance at finite temperatures. The mechanism behind this linear charge confinement monopole plasma. This plasma...

10.3390/quantum2030027 article EN cc-by Quantum Reports 2020-07-20

Abstract Room temperature superconductivity under normal conditions has been a major challenge of physics and material science since its discovery. Here the global room‐temperature observed in cleaved highly oriented pyrolytic graphite carrying dense arrays nearly parallel surface line defects is reported. The multiterminal measurements performed at ambient pressure interval 4.5 K ≤ T 300 magnetic fields 0 B 9 applied perpendicular to basal graphitic planes reveal that superconducting...

10.1002/qute.202300230 article EN cc-by Advanced Quantum Technologies 2023-12-31

By establishing a relation between information erasure and continuous phase transitions we generalise the Landauer bound to analog computing systems. The entropy production per degree of freedom during an variable (reset standard value) is given by logarithm configurational volume measured in units its minimal quantum. As consequence every computation has be carried on with finite number bits infinite precision forbidden fundamental laws physics, since it would require amount energy.

10.1103/physreve.94.012139 article EN publisher-specific-oa Physical review. E 2016-07-25

Landauer principle describes the minimum heat produced by an information-processing device. Recently a new term has been included in production: it's called conditional entropy and takes into account microstates content of given logic state. Usually this is assumed zero bistable symmetric systems thanks to strong hypothesis used derive principle. In paper we show that can be nonzero even for it expressed as sum three different terms related probabilistic features The contribution (and thus...

10.1209/0295-5075/111/40004 article EN EPL (Europhysics Letters) 2015-08-01

It has been believed that the superinsulating state, which is low-temperature charge Berezinskii-Kosterlitz-Thouless (BKT) phase, can exist only in two dimensions. We develop a general gauge description of state and related deconfinement transition Cooper pairs predict existence three dimensions (3d). find 3d superinsulators exhibit Vogel-Fulcher-Tammann (VFT) critical behavior at phase transition. This string analog Berezinski-Kosterlitz-Thouless criticality for logarithmically linearly...

10.1038/s41598-018-33765-5 article EN cc-by Scientific Reports 2018-10-18

The classic Landauer bound can be lowered when erasure errors are permitted. Here we point out that continuous phase transitions characterized by an order parameter also viewed as information resetting a certain number of bits to standard value. information-theoretic expression for the generalized in terms error probability implies thus universal form thermodynamic entropy partially ordered phase. We explicitly show function interaction parameters and temperature is identical alone specific...

10.1103/physreve.89.052138 article EN Physical Review E 2014-05-27

We investigate nonperturbative features of a planar lattice Chern-Simons gauge theory modeling the physics Josephson junction arrays. By identifying relevant topological configurations and their interactions, we determine phase structure model. Our results match observed transitions in arrays suggest also possibility oblique confining ground states corresponding to purely quantum Hall regimes for either charges or vortices.

10.1103/physrevlett.75.3517 article EN Physical Review Letters 1995-11-06

We propose a vortex gauge field theory in which the curl of Dirac fermion current density plays role pseudovector charge density.In this field-theoretic model, interactions are mediated by single scalar boson its antisymmetric tensor formulation.We show that these long range induce invariant photon mass one-loop effective action.The loop generates coupling between photons and boson, acquires thus charge.This represents also an induced, invariant, topological for photons, leading to Meissner...

10.1088/1751-8113/47/9/092001 article EN Journal of Physics A Mathematical and Theoretical 2014-02-17
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