Publications (57)
An energetic dirty fireball detected in soft X-rays
C. -Y. Dai, J. Quirola-Vásquez, Y. -H. Wang +76
The collapse of massive stars drives explosions that power relativistic fireballs. If only a small amount of matter is entrained, such clean fireballs can expand with Lorentz facto…
On planetary mass determination in the case of super-Earths orbiting active stars. The case of the CoRoT-7 system
S. Ferraz-Mello, M. Tadeu dos Santos, C. Beauge +2
This investigation uses the excellent HARPS radial velocity measurements of CoRoT-7 to re-determine the planet masses and to explore techniques able to determine mass and elements…
SiPMs coated with TPB : coating protocol and characterization for NEXT
V. Ãlvarez, J. Agramunt, M. Ball +91
Silicon photomultipliers (SiPM) are the photon detectors chosen for the tracking readout in NEXT, a neutrinoless ββ decay experiment which uses a high pressure gaseous xenon time…
The Potential of TiCT Nano-sheets (MXenes) for Nanoscale Solid Lubrication Revealed by Friction Force Microscopy
A. Rodriguez, M. S. Jaman, O. Acikgoz +5
TiCT nano-sheets (MXenes) are an emerging class of two-dimensional materials with outstanding potential to be employed in energy storage, catalysis, and triboelectric a…
The CAST Time Projection Chamber
D. Autiero, B. Beltran, J. M. Carmona +19
One of the three X-ray detectors of the CAST experiment searching for solar axions is a Time Projection Chamber (TPC) with a multi-wire proportional counter (MWPC) as a readout str…
Spectral modeling of scintillator for the NEMO-3 and SuperNEMO detectors
J. Argyriades, R. Arnold, C. Augier +90
We have constructed a GEANT4-based detailed software model of photon transport in plastic scintillator blocks and have used it to study the NEMO-3 and SuperNEMO calorimeters employ…
Wave function network description and Kolmogorov complexity of quantum many-body systems
T. Mendes-Santos, M. Schmitt, A. Angelone +8
Programmable quantum devices are now able to probe wave functions at unprecedented levels. This is based on the ability to project the many-body state of atom and qubit arrays onto…
Absence of weak localization in two-dimensional disordered Frenkel lattices
A. Rodriguez, M. A. Martin-Delgado, J. Rodriguez-Laguna +4
The standard one-parameter scaling theory predicts that all eigenstates in two-dimensional random lattices are weakly localized. We show that this claim fails in two-dimensional di…
Results of the material screening program of the NEXT experiment
T. Dafni, V. Alvarez, I. Bandac +67
The 'Neutrino Experiment with a Xenon TPC (NEXT)', intended to investigate neutrinoless double beta decay, requires extremely low background levels. An extensive material screening…
Fiber-integrated microcavities for efficient generation of coherent acoustic phonons
O. Ortiz, F. Pastier, A. Rodriguez +9
Coherent phonon generation by optical pump-probe experiments has enabled the study of acoustic properties at the nanoscale in planar heterostructures, plasmonic resonators, micropi…
The case for a directional dark matter detector and the status of current experimental efforts
S. Ahlen, N. Afshordi, J. B. R. Battat +109
We present the case for a dark matter detector with directional sensitivity. This document was developed at the 2009 CYGNUS workshop on directional dark matter detection, and conta…
Collective vs local measurements in qubit mixed state estimation
E. Bagan, M. Baig, R. Munoz-Tapia +1
We discuss the problem of estimating a general (mixed) qubit state. We give the optimal guess that can be inferred from any given set of measurements. For collective measurements a…
Symmetry-Induced Tunnelling in One-Dimensional Disordered Potentials
E. Diez, F. Izrailev, A. A. Krokhin +1
A new mechanism of tunnelling at macroscopic distances is proposed for a wave packet localized in one-dimensional disordered potential with mirror symmetry, V(-x)=V(x). Unlike quan…
Data-driven discovery of statistically relevant information in quantum simulators
R. Verdel, V. Vitale, R. K. Panda +7
Quantum simulators offer powerful means to investigate strongly correlated quantum matter. However, interpreting measurement outcomes in such systems poses significant challenges.…
TREX-DM: a low background Micromegas-based TPC for low mass WIMP detection
F. J. Iguaz, J. G. Garza, F. Aznar +11
Dark Matter experiments are recently focusing their detection techniques in low-mass WIMPs, which requires the use of light elements and low energy threshold. In this context, we p…
Simple model for a quantum wire III. Transmission of finite samples with correlated disorder
J. M. Cervero, A. Rodriguez
The effect of a continuous model of correlations upon one-dimensional finite disordered quantum wires modeled by an array of delta-potentials, is analyzed. Although the model propo…
Absorption in atomic wires
J. M. Cervero, A. Rodriguez
The transfer matrix formalism is implemented in the form of the multiple collision technique to account for dissipative transmission processes by using complex potentials in severa…
NEXT, a HPGXe TPC for neutrinoless double beta decay searches
The NEXT Collaboration, F. Granena, T. Lux +61
We propose a novel detection concept for neutrinoless double-beta decay searches. This concept is based on a Time Projection Chamber (TPC) filled with high-pressure gaseous xenon,…
Search for solar axion emission from 7Li and D(p,gamma)3He nuclear decays with the CAST gamma-ray calorimeter
CAST Collaboration, S. Andriamonje, S. Aune +58
We present the results of a search for a high-energy axion emission signal from 7Li (0.478 MeV) and D(p,gamma)3He (5.5 MeV) nuclear transitions using a low-background gamma-ray cal…
Free ion yield observed in liquid isooctane irradiated by gamma rays. Comparison with the Onsager theory
J. Pardo, F. Gomez, A. Iglesias +7
We have analyzed data on the free ion yield observed in liquid isooctane irradiated by Co60 gamma rays within the framework of the Onsager theory about initial recombination. Sever…
Low background x-ray detection with Micromegas for axion research
S. Aune, J. F. Castel, T. Dafni +23
Axion helioscopes aim at the detection of solar axions through their conversion into x-rays in laboratory magnetic fields. The use of low background x-ray detectors is an essential…
Low X-ray bakground measurements at the Underground Canfranc Laboratory
J. Galan, S. Aune, T. Dafni +19
Micromegas detectors, thanks to the good spatial and temporal discrimination capabilities, are good candidates for rare event search experiments. Recent X-ray background levels ach…
Anderson localization transition and eigenfunction multifractality in ensemble of ultrametric random matrices
Y. V. Fyodorov, A. Ossipov, A. Rodriguez
We demonstrate that by considering disordered single-particle Hamiltonians (or their random matrix versions) on ultrametric spaces one can generate an interesting class of models e…
First Measurement of Correlated Charge Noise in Superconducting Qubits at an Underground Facility
G. Bratrud, S. Lewis, K. Anyang +35
We measure space- and time-correlated charge jumps on a four-qubit device, operating 107 meters below the Earth's surface in a low-radiation, cryogenic facility designed for the ch…
CAST constraints on the axion-electron coupling
K. Barth, A. Belov, B. Beltran +53
In non-hadronic axion models, which have a tree-level axion-electron interaction, the Sun produces a strong axion flux by bremsstrahlung, Compton scattering, and axio-recombination…
Tight-binding modeling of charge migration in DNA devices
G. Cuniberti, E. Macia, A. Rodriguez +1
Long range charge transfer experiments in DNA oligomers and the subsequently measured -- and very diverse -- transport response of DNA wires in solid state experiments exemplifies…
Performance of two decoy-state quantum cryptography protocols in earth-satellite links
L. Moli, A. Rodriguez, G. Seco-Granados
This paper has been withdrawn by the author. It will be published again after submission to a journal.
Modeling and characterization of TES-based detectors for the Ricochet experiment
R. Chen, E. Figueroa-Feliciano, G. Bratrud +26
Coherent elastic neutrino-nucleus scattering (CENS) offers a valuable approach in searching for physics beyond the Standard Model. The Ricochet experiment aims to perform a pre…
Characterization of a medium size Xe/TMA TPC instrumented with microbulk Micromegas, using low-energy -rays
The NEXT collaboration, V. Alvarez, F. I. G. M. Borges +87
NEXT-MM is a general-purpose high pressure (10 bar, l active volume) Xenon-based TPC, read out in charge mode with an 8 cm 8 cm-segmented 700 cm plane (1152 ch…
Lessons from the operation of the "Penning-Fluorescent" TPC and prospects
Diego Gonzalez-Diaz, F. Aznar, J. Castel +15
We have recently reported the development of a new type of high-pressure Xenon time projection chamber operated with an ultra-low diffusion mixture and that simultaneously displays…
Ground-state cooling of a trapped ion using long-wavelength radiation
S. Weidt, J. Randall, S. C. Webster +5
We demonstrate ground-state cooling of a trapped ion using radio-frequency (RF) radiation. This is a powerful tool for the implementation of quantum operations, where RF or microwa…
CAST solar axion search with 3^He buffer gas: Closing the hot dark matter gap
M. Arik, S. Aune, K. Barth +72
The CERN Axion Solar Telescope (CAST) has finished its search for solar axions with 3^He buffer gas, covering the search range 0.64 eV < m_a <1.17 eV. This closes the gap to the co…
Machine learning in front of statistical methods for prediction spread SARS-CoV-2 in Colombia
A. Estupiñán, J. Acuña, A. Rodriguez +6
An analytical study of the disease COVID-19 in Colombia was carried out using mathematical models such as Susceptible-Exposed-Infectious-Removed (SEIR), Logistic Regression (LR), a…
Stability of Terrestrial Planets in the Habitable Zone of Gl 777 A, HD 72659, Gl 614, 47 Uma and HD 4208
N. Asghari, C. Broeg, L. Carone +37
We have undertaken a thorough dynamical investigation of five extrasolar planetary systems using extensive numerical experiments. The systems Gl 777 A, HD 72659, Gl 614, 47 Uma and…
First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
J. Aalbers, D. S. Akerib, C. W. Akerlof +344
The LUX-ZEPLIN experiment is a dark matter detector centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dak…
Characterization of a Spherical Proportional Counter in argon-based mixtures
F. J. Iguaz, A. Rodriguez, J. F. Castel +1
The Spherical Proportional Counter is a novel type of radiation detector, with a low energy threshold (typically below 100 eV) and good energy resolution. This detector is being de…
Fiber-based angular filtering for high-resolution Brillouin spectroscopy in the 20-300 GHz frequency range
A. Rodriguez, Priya, O. Ortiz +5
Brillouin spectroscopy emerges as a promising non-invasive tool for nanoscale imaging and sensing. One-dimensional semiconductor superlattice structures are eminently used for sele…
The Luminous Convolution Model
S. Cisneros, N. S. Oblath, J. A. Formaggio +5
We present a heuristic model for predicting the rotation curves of spiral galaxies. The Luminous Convolution Model (LCM) utilizes Lorentz-type transformations of very small changes…
Beating the spin-down limit on gravitational wave emission from the Crab pulsar
The LIGO Scientific Collaboration, B. Abbott, R. Abbott +440
We present direct upper limits on gravitational wave emission from the Crab pulsar using data from the first nine months of the fifth science run of the Laser Interferometer Gravit…
Accurate gamma and MeV-electron track reconstruction with an ultra-low diffusion Xenon/TMA TPC at 10 atmospheres
Diego Gonzalez-Diaz, V. Alvarez, F. I. G. Borges +80
We report the performance of a 10 atm Xenon/trimethylamine time projection chamber (TPC) for the detection of X-rays (30 keV) and gamma-rays (0.511-1.275 MeV) in conjunction with t…
Construction and commissioning of CMS CE prototype silicon modules
B. Acar, G. Adamov, C. Adloff +327
As part of its HL-LHC upgrade program, the CMS Collaboration is developing a High Granularity Calorimeter (CE) to replace the existing endcap calorimeters. The CE is a sampling cal…
A two dimensional position sensitive gas chamber with scanned charge transfer readout
F. Gomez, A. Iglesias, R. Lobato +6
We have constructed and tested a 2d position sensitive parallel-plate gas ionization chamber with scanned charge transfer readout. The scan readout method described here is based o…
Signature of topological crystalline insulating behavior in new B2X2Zn (X=Ir, Rh, Co) compound from first-principles Computation
J. Howard, A. Rodriguez, N. Haldolaarachchige +1
Recent attempts at topological materials have revealed a large class of materials that show gapless surface states protected by time-reversal symmetry and crystal symmetries. Among…
Anomalous optical absorption in a random system with scale-free disorder
E. Diaz, A. Rodriguez, F. Dominguez-Adame +1
We report on an anomalous behavior of the absorption spectrum in a one-dimensional lattice with long-range-correlated diagonal disorder with a power-like spectrum in the form S(k)…
Characterization, Simulation and Test Beam Data Analysis of Stitched Passive CMOS Strip Sensors
I. Zatocilova, J. -H. Arling, M. Baselga +19
In the passive CMOS Strips Project, strip sensors were designed at the University of Bonn and produced by LFoundry in 150 nm technology, with an additional backside processing from…
Radiopurity control in the NEXT-100 double beta decay experiment: procedures and initial measurements
V. Alvarez, I. Bandac, A. Bettini +77
The Neutrino Experiment with a Xenon TPC (NEXT) is intended to investigate the neutrinoless double beta decay of 136Xe, which requires a severe suppression of potential backgrounds…
The Luminous Convolution Model as an alternative to dark matter in spiral galaxies
S. Cisneros, N. S. Oblath, J. A. Formaggio +6
The Luminous Convolution Model (LCM) demonstrates that it is possible to predict the rotation curves of spiral galaxies directly from estimates of the luminous matter. We consider…
Topological optical and phononic interface mode by simultaneous band inversion
O. Ortiz, P. Priya, A. Rodriguez +3
Interface modes have been widely explored in the field of electronics, optics, acoustics and nanophononics. One strategy to generate them is band inversion in one-dimensional super…
Compact white-dwarf binaries in the combined SRG/eROSITA/SDSS eFEDS survey
A. Schwope, J. Kurpas, P. Baecke +22
Aims. Compact white-dwarf binaries are selected from spectra obtained in the early SDSS-V plate program. A dedicated set of SDSS plate observations were carried out in the eFEDS fi…
Measurement of single charged pion production in the charged-current interactions of neutrinos in a 1.3 GeV wide band beam
K2K Collaboration, A. Rodriguez, L. Whitehead
Single charged pion production in charged-current muon neutrino interactions with carbon is studied using data collected in the K2K long-baseline neutrino experiment. The mean ener…
Design and Initial Performance of the Prototype for the BEACON Instrument for Detection of Ultrahigh Energy Particles
D. Southall, C. Deaconu, V. Decoene +18
The Beamforming Elevated Array for COsmic Neutrinos (BEACON) is a planned neutrino telescope designed to detect radio emission from upgoing air showers generated by ultrahigh energ…
Lowering the background level and the energy threshold of Micromegas x-ray detectors for axion searches
F. J. Iguaz, S. Aune, F. Aznar +14
Axion helioscopes search for solar axions by their conversion in x-rays in the presence of high magnetic fields. The use of low background x-ray detectors is an essential component…
Anderson transition in low-dimensional disordered systems driven by nonrandom long-range hopping
A. Rodriguez, V. A. Malyshev, G. Sierra +3
The single-parameter scaling hypothesis predicts the absence of delocalized states for noninteracting quasiparticles in low-dimensional disordered systems. We show analytically and…
Optical absorption in Fibonacci lattices at finite temperature
A. Rodriguez, F. Dominguez-Adame
We consider the dynamics of Frenkel excitons on quasiperiodic lattices, focusing our attention on the Fibonacci case as a typical example. We evaluate the absorption spectrum by so…
Towards a new generation axion helioscope
I. G. Irastorza, F. T. Avignone, S. Caspi +33
We study the feasibility of a new generation axion helioscope, the most ambitious and promising detector of solar axions to date. We show that large improvements in magnetic field…
The DAQ system of the 12,000 Channel CMS High Granularity Calorimeter Prototype
B. Acar, G. Adamov, C. Adloff +327
The CMS experiment at the CERN LHC will be upgraded to accommodate the 5-fold increase in the instantaneous luminosity expected at the High-Luminosity LHC (HL-LHC). Concomitant wit…
Zero-energy peak of the density of states and localization properties of a one-dimensional Frenkel exciton: Off-diagonal disorder
G. G. Kozlov, V. A. Malyshev, F. Dominguez-Adame +1
We study a one-dimensional Frenkel Hamiltonian with off-diagonal disorder, focusing our attention on the physical nature of the zero-energy peak of the density of states. The chara…