Physics of Elementary Particles and Fields



Example of elementary particles collision at the LHC.


The main objective of this research area, also known as High Energy Physics is the most fundamental understanding of the constituents of nature and their basic interactions. 


For fundamental constituents we understand the elementary particles, which are classified into two types: fermions and bosons. Currently, we know for basic interactions: weak and strong nuclear forces, the electromagnetic and the gravitational interactions. The current theory that describes the interactions between elementary particles (ignoring gravity) is the Standard Model. It results from Quantum Field Theory by considering certain special symmetries. In this model fermions appear in replicas of a family composed of the electron, the neutrino and up and down quarks (the constituents of protons and neutrons). The vector bosons are intermediaries of interactions and also there is a postulated boson scalar (Higgs boson) to explain the existence of mass of other elementary particles. The existence of the Higgs boson was recently confirmed by experiments at the Large Hadron Collider (LHC) at CERN.



Elementary particles of the Standard Model


The work of a physicist in this area can be purely theoretical: seeking mathematical tools to fill gaps in current knowledge of elementary interactions, testing the consistency of new theories or hypotheses as extra dimensions, supersymmetry, etc. It can also be experimental, ranging from the construction and operation of particle detectors of all sizes, to the interpretation of the data provided by these machines, trying to connect them with the various hypotheses existing in the theoretical field. In common, all physicists working in this area need to have a solid understanding of the fundamental theories of physics, especially quantum mechanics and relativity, and a great curiosity for understanding the innermost nature of matter.


Research Perspectives


The successful experimental confirmation of the Standard Model helped formulate new questions that drive the research topics in the area. Among some of these issues are the following:

• precision tests of the Standard Model,

• stabilization the electroweak scale,

• the existence of new symmetries such as supersymmetry and gauge groups beyond the Standard Model,

• mechanisms of symmetry breaking and mass generation,

• the problem of mass and mixing of neutrinos,

• the problem of matter-antimatter asymmetry in the universe,

• the stability of the proton,

• the problem of confinement of quarks and the mass spectrum of QCD at low energies,

• candidates particles for dark matter,

• the existence of extra dimensions,

and so on.


Example of a Calabi-Yau space, studied in the context of compactifications of String Theory 



There are also applications in condensed matter physics, for example, the quantum Hall effect and low dimensional systems.


Great experiments in physics take place today, as well as new experiments are planned for the coming years. These experiments have significant potential to lead to new discoveries. The UFABC has representatives in the CMS collaboration at CERN, which investigates high-energy collisions in the LHC accelerator, and in the Pierre Auger cosmic ray observatory, for example. Thus, the coming years should continue with an intense activity, both in experimental and theoretical field in the area of Elementary Particles and Fields.


Interresting Links


Supervisors working in this field


Quantum Field Theory / Elementary Particles Phenomenology


Física Experimental de Altas Energias 



Information content in F(R) brane models with nonconstant curvature, Phys. Rev. D 92, 126005 (2015)

Thermal rectification in anharmonic chains under an energy-conserving noise, Phys. Rev. E 92, 062120 (2015)

Multiband electronic characterization of the complex intermetallic cage system Y1−xGdxCo2Zn20, Phys. Rev. B 92, 214414 (2015)

Irreversibility and the Arrow of Time in a Quenched Quantum System, Phys. Rev. Lett. 115, 190601 (2015)

Practical security analysis of two-way quantum-key-distribution protocols based on nonorthogonal states, Phys. Rev. A 92, 052317 (2015)

Tight bound on the trace distance between a realistic device with partially indistinguishable bosons and the ideal Boson Sampling, Phys. Rev. A 91, 063842 (2015)

Hierarchically structured nanowires on and nanosticks in ZnO microtubes, Scientific Reports 5, 15128 (2015)

Microtubes decorated with nanowires, Applied Physics Letters 106, 213104 (2015)

Relaxation dynamics of deeply supercooled confined water in L,L-diphenylalanine micro/nanotubes, Phys. Chem. Chem. Phys. 17, 32126 (2015)

Compact stars with a small electric charge: the limiting radius to mass relation and the maximum mass for incompressible matter, Euro. Phys. J. C, 75, 76 (2015)

Charged black holes in expanding Einstein-de Sitter universes, Classical and Quantum Gravity 32, 115004 (2015)

Numerical relativity simulations of neutron star merger remnants using conservative mesh refinement, Phys. Rev. D 91, 124041 (2015)

DFT+U Simulation of the Ti_4O_7−TiO_2 Interface, Phys. Rev. Applied 3, 024009 (2015)

Partial indistinguishability theory for multiphoton experiments in multiport devices, Phys. Rev. A 91, 013844 (2015)

Coherent measurements in quantum metrology, New Journal of Physics 17, 023057 (2015)

Classical Tests of General Relativity: Brane-World Sun from Minimal Geometric Deformation, Europhysics Letters 110, 40003 (2015)

Configurational Entropy for Travelling Solitons in Lorentz and CPT Breaking Systems, Annals of  Physics 359, 198 (2015)

Thick Braneworlds and the Gibbons-Kallosh-Linde No-go Theorem in the Gauss-Bonnet Framework, Europhysics Letters 110, 20004 (2015)

Questing for Algebraic Mass Dimension One Spinor Fields, European  Physical Journal C 75 (2015) 266

D-oscillons in the standard model extension, Phys. Rev. D 91, 125021 

Non-Markovian qubit dynamics in a circuit-QED setupPhys. Rev. A 91, 022122

Cavity-aided quantum parameter estimation in a bosonic double-well Josephson junctionPhys. Rev. A 91, 033631 (2015)

Thermal transport in out-of-equilibrium quantum harmonic chainsPhys. Rev. E 91, 042116 (2015)

Spinor Fields Classification in Arbitrary Dimensions and New Classes of Spinor Fields on 7-Manifolds, JHEP 1502, 069 (2015)

Regular Bulk Solutions in Brane-worlds with Inhomogeneous Dust and Generalized Dark Radiation, Adv. High Energy Phys. 2015, 59268 (2015)

Holographic Dark Energy Models and Higher Order Generalizations in Dynamical Chern-Simons Modified Gravity, Eur. Phys. J. C 75, 44 (2015)

Spherically symmetric thick branes cosmological evolution, Gen. Rel. Grav. 47, 1840 (2015).


Endereço Postal // Postal Address

Programa de Pós-Graduação em Física
Universidade Federal do ABC (UFABC)
Campus Santo André, Bloco B, 8º andar.
Rua Santa Adélia, 166, 09210-170, Santo André, SP, Brasil

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