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Twist fields emerge in a number of physical applications ranging from entanglement entropy to scattering amplitudes in four-dimensional gauge theories. In this work, their vacuum expectation values are studied in the path integral…

High Energy Physics - Theory · Physics 2017-09-27 A. V. Belitsky

Neutron interferometry enables precision measurements that are typically operated within elaborate, multi-layered facilities which provide substantial shielding from environmental noise. These facilities are necessary to maintain the…

Robust tracking of a target in a clutter environment is an important and challenging task. In recent years, the nearest neighbor methods and probabilistic data association filters were proposed. However, the performance of these methods…

Machine Learning · Computer Science 2020-12-18 Bahman Moraffah , Christ Richmond , Raha Moraffah , Antonia Papandreou-Suppappola

A pellet target produces micro-spheres of different materials, which are used as an internal target for nuclear and particle physics studies. We will describe the pellet hydrogen behavior by means of fluid dynamics and thermodynamics. In…

Instrumentation and Detectors · Physics 2009-11-11 O. Nordhage , Z. -K. Li , C. -J. Friden , G. Norman , U. Wiedner

The one-loop effective potential for gauge models in static de Sitter space at finite temperatures is computed by means of the $\zeta$--function method. We found a simple relation which links the effective potentials of gauge and scalar…

High Energy Physics - Theory · Physics 2016-09-06 Lara De Nardo , Dmitri V. Fursaev , Gennaro Miele

A prototype of a single-gap glass Resistive Plate Chamber (RPC) is constructed by the authors. To find the considerations required for better operation of the detector's gas system, we have simulated the flow of the Ar gas through the…

Instrumentation and Detectors · Physics 2021-11-30 Yousef Pezeshkian , Amir Kiyoumarsioskouei , Majid Ahmadpouri , Ghasem Ghorbani

Vacuum birefringence is one of the most striking predictions of strong field quantum electrodynamics: Probe photons traversing a strong field region can indirectly sense the applied "pump" electromagnetic field via quantum fluctuations of…

High Energy Physics - Phenomenology · Physics 2016-07-08 Felix Karbstein , Chantal Sundqvist

We propose to develop a full-accuracy flight test environment for the Mars helicopter and related Mars-atmospheric vehicles. The experiment would use reduced-g atmospheric flights with an aircraft that houses a properly sized vacuum…

Popular Physics · Physics 2019-10-22 J. Pablo Afman , Eric Feron , Mitchell Walker

A novel instrument has been developed to monitor and record the ambient pa- rameters such as temperature, atmospheric pressure and relative humidity. These parameters are very essential for understanding the characteristics such as gain of…

Instrumentation and Detectors · Physics 2015-07-15 S. Sahu , M. R. Bhuyan , Sharmili Rudra , S. Biswas , B. Mohanty , P. K. Sahu

In projective measurements of energy, a target system is projected to an eigenstate of the system Hamiltonian, and the measurement outcomes provide the information of corresponding eigen-energies. Recently, it has been shown that such a…

Quantum Physics · Physics 2017-06-14 Yuichiro Matsuzaki , Shojun Nakayama , Akihito Soeda , Mio Murao , Shiro Saito

The pepper-pot method is a popular emittance measurement technique for high intensity beams at low energy such as those generated by photo-injectors. In this paper, the beam dynamics in the space charge dominated regime and analytical…

Accelerator Physics · Physics 2019-09-04 Oznur Apsimon , Barney Williamson , Guoxing Xia

The India-based Neutrino Observatory Project (INO) is a proposed underground high energy physics experiment at Theni, India to study the neutrino oscillation parameters using atmospheric neutrinos. The 50 kton magnetised INO-ICAL detector…

Instrumentation and Detectors · Physics 2019-04-19 Suryanarayan Mondal , V. M. Datar , Gobinda Majumder , N. K. Mondal , K. C. Ravindran , B. Satyanarayana

In developing mobile robots for exploration on the planetary surface, it is crucial to evaluate the robot's performance, demonstrating the harsh environment in which the robot will actually be deployed. Repeatable experiments in a…

Robotics · Computer Science 2023-10-24 Kentaro Uno , Kazuki Takada , Keita Nagaoka , Takuya Kato , Arthur Candalot , Kazuya Yoshida

This paper presents the design, construction and commissioning of a pneumatic system for pressure probe measurements in flows of organic vapors in non-ideal conditions, close to the liquid-vapor saturation curve and the critical point where…

Instrumentation and Detectors · Physics 2022-05-18 Camilla C. Conti , Alberto Fusetti , Andrea Spinelli , Paolo Gaetani , Alberto Guardone

The precise measurement of the pressure of the gas enclosed in the starting volume of a static expansion system is important for achieving low measurement uncertainties. This work focuses on the valve closing process and the resulting…

Instrumentation and Detectors · Physics 2020-11-13 Thomas Bock , Matthias Bernien , Christian Buchmann , Tom Rubin , Karl Jousten

Quantum inertial sensors test general relativity, measure fundamental constants, and probe dark matter and dark energy in the laboratory with outstanding accuracy. Their precision relies heavily on carefully choreographed quantum control of…

Atomic Physics · Physics 2025-08-25 Kenneth Nakasone , Paola Luna , Andrei Zhukov , Matthew Tao , Garrett Louie , Cristian D. Panda

Short pulses of a probe laser have been used in the past to measure whether a two-level atom is in its ground or excited state. The probe pulse couples the ground state to a third, auxiliary, level of the atom. Occurrence or absence of…

Quantum Physics · Physics 2009-10-30 Almut Beige , Gerhard C. Hegerfeldt , Dirk G. Sondermann

We suggest an experiment to observe vacuum birefringence induced by intense laser fields. A high-intensity laser pulse is focused to ultra-relativistic intensity and polarizes the vacuum which then acts like a birefringent medium. The…

High Energy Physics - Phenomenology · Physics 2009-11-11 T. Heinzl , B. Liesfeld , K. -U. Amthor , H. Schwoerer , R. Sauerbrey , A. Wipf

Inferring air quality from a limited number of observations is an essential task for monitoring and controlling air pollution. Existing inference methods typically use low spatial resolution data collected by fixed monitoring stations and…

Quantum technology is approaching a level of maturity, recently demonstrated in space-borne experiments and in-field measurements, which would allow for adoption by non-specialist users. Parallel advancements made in microprocessor-based…

Quantum Physics · Physics 2021-09-15 T. J. Barrett , W. Evans , A. Gadge , S. Bhumbra , S. Sleegers , R. Shah , J. Fekete , F. Orucevic , P. Kruger