Department of Particle Physics and Astrophysics

Tal Alexander, Head


The Department of Particle Physics and Astrophysics is engaged in both experimental and theoretical research, in various directions. These include elementary particle physics, field theory, string theory, theoretical astrophysics, observational astrophysics, particle astrophysics, relativistic heavy ion physics, molecular physics, nuclear physics, plasma physics, and radiation detection physics.


O. Aharony

Dualities between field theories in various dimensions
O. Aharony, G. Gur-Ari, S. Minwalla, P. Narayan, S. Razamat, N. Seiberg, T. Sharma, B. Willett, R. Yacoby

Strongly coupled field theories in anti-de Sitter space
O. Aharony, M. Berkooz, S. Rey, D. Tong, S. Yankielowicz

Effective actions on strings (in particular confining strings)
O. Aharony, Z. Komargodski, A. Schwimmer, J. Sonnenschein, S. Yankielowicz

Weakly coupled versions of the AdS/CFT correspondence and possible derivations
O. Aharony, S. Minwalla, G. Gur-Ari, R. Yacoby


T. Alexander

Massive black holes

Dynamic of galactic nuclei

Gravitational wave sources

Circum-nuclear accretion disks

The growth of black holes in the early universe

Stellar phenomena in the center of the Milky Way


M. Berkooz

Theoretical high energy physics

  1.  String theory, Field theory, Gravity

  2.  Particle Phenomenology

  3.  Conformal field theory applications in condensed matter systems

  4.  Quantum information and black holes


A. Breskin

Basic phenomena in Radiation Detection Physics
A. Breskin, L. Arazi

  1.  ionization and excitation in gases and noble liquids

  2.  charge transport and multiplication in gas and noble liquids

  3.  photoemission from solids

  4.  Light multiplication in noble liquids ? Liquid Hole Multipliers (LHM)

Novel radiation detection concepts
A. Breskin, S. Bressler, L. Arazi

  1.  Gaseous electron multipliers: GEM, THGEM, WELL

  2.  Charged-particle detectors for particle, astroparticle and nuclear physics

  3.  Detectors for digital calorimetry (for future colliders)

  4.  Gaseous photomultipliers (GPM) for UV and visible light

  5.  Detector concepts for neutron imaging

  6.  Dark Matter Detectors

  7.  Detection of hidden explosives and nuclear materials

Early detection and diagnosis of prostate cancer
A. Breskin, S. Shilstein, D. Vartsky


R. Budnik

Dark Matter detection:

  1.  The XENON Dark Matter project: Data analysis, physics interpretations, development and construction of the future detector XENON1T

Detector physics:

  1.  Novel effects in LXe detectors

  2.  Future concepts and technologies for rare event detection

Other:

  1.  Future concepts for Cosmic Ray precision detection


E. Duchovni

Search for Supersymmetry with the ATLAS detector at CERN

  1.  Inclusive Search

  2.  Study of Gauge Mediated symmetry breaking

  3.  Study of R-Parity violating models

  4.  Study of Anomaly Mediated Symmetry breaking

  5.  multi-jet final states

Study of substructure in high transverse momentum jets with the ATLAS detector at CERN
E. Duchovni, G. Perez, S. Sinervo

  1.  Jets at CDF

  2.  Jet's mass

  3.  Angularity and planar flow

Study of strange resoinance production with the ATLAS detector at CERN

  1.  K0S

  2.  Phi


Y. Frishman

Confinement and screening.
Y. Frishman, Jacob Sonnenschein

Non-abelian gauge theories.
Y. Frishman, Marek Karliner, Jacob Sonnenschein

From current to constituent quarks.
Y. Frishman, Marek Karliner


A. Gal-Yam

Cosmic explosions

  1.  Core-collapse supernova explosions: their origins, nature, physics and population statistics

  2.  Thermonuclear supernova explosions (SNe Ia): their nature and rates

  3.  Gamma-Ray Bursts: their origin and relation to supernovae

  4.  New types of cosmic explosions

Wide-field variability surveys
A. Gal-Yam, S. Kulkarni, E. Ofek, (Caltech), M. Sullivan (UK), P. Mazzali (Germany/Italy), J-P Kneib (France)

  1.  The Palomar Transient Factory (PTF) - the next generation wide-field variability survey

  2.  Transients from the supernova Factory (SNF) - a pilot project for the PTF

  3.  Wide-field radio variability surveys


D. Gepner

Rational conformal field theory and solvable lattice models.


E. Gross

Higgs Physics with the ATLAS detector at the LHC
E. Gross, Students: Ohad Silbert and Ofer Vitells,Liron Barak

  1.  Search for Charged Higgs Boson

  2.  Search for Supersymmetric Higgs decaying into Taus

  3.  Higgs physics in general

Jets faking electrons with the ATLAS detector
E. Gross, Student: Ohad Silbert


S. Gurvitz

Multi-dimensional tunnelling.
S. Gurvitz, Xin-Qi Li, D. Sokolovski

  1.  Two-potential approach to tunneling problems

  2.  Cluster decay

  3.  Modified tunneling Hamiltonian

  4.  Tunneling of the Bose-Einstein Condensate

Final state interaction in inclusive reactions.
S. Gurvitz, A. Aharony, O. Entin-Wohlman, Xin-Qi Li, Wei-Min Zhang

  1.  Number and energy resolved master equations for quantum transport

  2.  Relaxation and dephasing in persistent current

  3.  Zeno effect and quantum description of classical apparatus

Quantum transport in mesoscopic systems and the measurement problem.
S. Gurvitz, M. Traini

  1.  Bjorken scaling and confinement

  2.  Higher twist corrections to nucleon structure functions


H. Harari

Neutrino Physics (Particle Physics, cosmology, astrophysics implications)

Patterns of quarks and leptons (masses, mixing, substructure)


M. Hass

Light rare-isotope beams for nuclear astrophysics, neutrino physics and fundamental interactions
M. Hass, Dr. Guy Ron, Hebrew Univresity, Dr. Dan Berkovits, Dr. Israel Mardor: Soreq Nuclear Research Centre. Dr. Oded Heber (WI)

  1.  Low-energy fusion reactions, relevant to the solar neutrino issue. Exeriments at the Van de Graaff accelerator of the Weizmann Institute

  2.  Explosive nucleo-synthesis scenraios and the nuclear reactions playing a role in these astrophysical sites; x-ray bursts, supernoave, rp-process reactions

  3.  Development of techniques and tools for light radioactive beam production for nuclear astrophysics and neutrino physics. Connection to the SPIRAL-II facility at GANIL (France) and the SARAF accelerator at NRC Soreq

  4.  Fundamental Insteraction studies using trapped radioactive nuclei


U. Karshon

Heavy quark production at the HERA e-p collider.

Gluon density in the proton and partonic structure of the photon.

Tests of QCD dynamics in high energy e-p collisions.


B. Katz

Open questions in theoretical astrophysics including:

  1.  How do stars explode to produce supernovae? (I think there is an actual chance to finally answer this soon due to accumulating data and new ideas!)

  2.  The three body problem (surprisingly connected to supernovae)

  3.  Where do Cosmic Rays come from and how are they accelerated?


M. Kirson

The shell model and interacting boson model for nuclei.

Theory and systematics of nuclear structure.


Z. Komargodski

Particle Physics and Quantum Field Theory


Y. Maron

Investigation of matter and plasma subjected to high-energy-density deposition with implications to fusion and space physics:

  1.  Laser-matter interaction

  2.  Warm dense matter formed by intense laser solid-state interaction (solid-state with temperatures of hundreds of thousands degrees).

  3.  Radiation transport and ion temperature in imploding plasmas.

  4.  Plasmas under pulsed magnetic fields.

  5.  Particle acceleration by laser-plasma interaction.

  6.  Instabilities and turbulent phenomena.

Development of novel spectroscopic diagnostic methods for matter under extreme conditions:

  1.  Calculation and analysis of spectral line-shapes and intensities.

  2.  Design and building of fast optical spectroscopic systems (from the visible to the x-rays).

Close collaboration with major plasma laboratories in the US and Germany


G. Mikenberg

Search for the standard-model and SUSY Higgs-bosons at LEP.
G. Mikenberg, E. Duchovni, E. Gross, L. Levinson, D. Lellouch

Detector development and study of physics for LHC.
G. Mikenberg, E. Duchovni, E. Gross, L. Levinson, D. Lellouch

Search for Supersymmetry at LEP.
G. Mikenberg, E. Duchovni, E. Gross, L. Levinson, D. Lellouch

Search for Higgs bosons and SUSY particles at LHC.
G. Mikenberg, E. Duchovni, E. Gross, L. Levinson, D. Lellouch

Trigger and data acquisition for LHC experiments.
G. Mikenberg, E. Duchovni, E. Gross, L. Levinson, D. Lellouch

Reconfigurable computing.
G. Mikenberg, E. Duchovni, E. Gross, L. Levinson, D. Lellouch


M. Milgrom

High energy astrophysics: x-ray sources, gamma-ray sources.

Departure from Newtonian dynamics as an explanation of the dark-matter problem in galactic systems.

Black holes at the centers of galaxies


A. Milov

Analysis of the Heavy Ion data from the ATLAS experiment at the LHC

Global event characterization

Heavy boson production and boson-jet correlations

Collective dynamics.

Detector upgrades for ATLAS and PHENIX


Y. Nir

Higgs physics

Flavor physics

CP violation

Top physics

Particle cosmology (dark matter, leptogenesis, baryogenesis)

Neutrino physics


E. Ofek

Transients and cosmic explosions: supernova, shock breakout and interaction of supernova ejecta with circum-stellar matter

Probing the edge of the solar system using stellar occultations: Building instruments with high temporal resolution to search for small objects in the Kuiper belt and the Oort cloud

Gravitational lensing and microlensing

Direct search for exoplanets using high contrast imaging techniques


G. Perez

What gives masses to the particles? We believe that it is related to electroweak symmetry breaking which raises the hierarchy problem, the huge gap between the weak and Planck scales. The LHC experiments will address these questions very soon. Recent cosmological-observation raised additional puzzles: What is the source of dark matter and energy? We explore experimental and theoretical methods to improve our knowledge regarding these issues.

  1.  A. Jenkins and G. Perez, 'Looking for Life in the Multiverse, 'Scientific American (01/2010).

  2.  K. Agashe, K. Blum, S.J. Lee and G. Perez, 'Astrophysical Implications of a Visible Dark Matter Sector from a Custodially Warped-GUT,' arXiv:0912.3070 [hep-ph].

  3.  A. Fitzpatrick, G. Perez and L. Randall, 'Flavor from Minimal Flavor Violation & a Viable Randall-Sundrum Model,' Phys. Rev. Lett., 100, 171604 (2008) [arXiv:0710.1869 [hep-ph]].

  4.  K. Agashe, A. Belyaev, T. Krupovnickas, G. Perez and J. Virzi, 'LHC signals from warped extra dimensions,' Phys. Rev. D 77, 015003 (2008) [arXiv:hep-ph/0612015].


I. Tserruya

Study of ultra-relativistic heavy-ion collisions using the PHENIX detector at RHIC (Relativistic Heavy Ion Collider) at Brookhaven National Laboratory and the CERES detector at CERN
I. Tserruya, I. Ravinovich

R&D, construction and installation of an HBD (Hadron Blind Detector) for the PHENIX experiment at RHIC.
I. Tserruya, I. Ravinovich

Electron pair production in relativistic heavy ion collisions: search for quark-gluon plasma and chiral symmetry restoration.
I. Tserruya, I. Ravinovich


V. Usov

Physical processes in very strong magnetic fields.
V. Usov, A.E. Shabad

Physical processes in relativistic electron-positron plasma.
V. Usov, G.Z. Machabeli

The theory of nonthermal radiation from compact astronomical objects (pulsars, white dwarfs, gamma-ray bursters etc.).
V. Usov, A.K. Harding, D.B. Melrose, M. Milgrom, A.G. Muslimov, A.E. Shabad

Physical processes at the surface and astrophysical appearance of strange-quark-matter stars.
V. Usov, K.S. Cheng, T. Harko, M. Milgrom, F.Weber

Hydrodynamics and high-energy physics of colliding stellar winds in binary systems.
V. Usov, N.N. Pilyugin


E. Waxman

Theoretical astrophysics

HIgh energy astrophysics (gamma-ray bursts, relativistic plasmas...)

High energy neutrinos and cosmic-rays


D. Zajfman

Molecular astrophysics.
D. Zajfman, O. Heber

Cooling of molecular ions and clusters, ion trap dynamics.
D. Zajfman, O. Heber

Molecular physics using storage rings.
D. Zajfman, O. Heber

Femtosecond laser photodynamics
D. Zajfman, Y. Silberberg, O. Heber