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2nd Annual Niels Bohr Institute MSc. Student Symposium

31 March 2023
H.C. Ørsted Institute
Europe/Copenhagen timezone
Abstract submission and Registration is now open!

Contribution List

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10. Improving Neutrino Oscillation Measurements by using the Earth’s layer structure
31/03/2023, 13:00
Presentation
Oral presentation

One persisting question of the Standard Model and particle physics is the Neutrino Mass Ordering. Even though we know that neutrinos have masses, we do not know how these masses are ordered from lowest to highest. Because of the quantum-mechanical nature of neutrinos and their reluctance to interact, measurements of their properties are difficult and convoluted. I will show how the earth’s...
6. Exploring Demographic Drift: A Redshift Dependent Two-Population Model of Type Ia Supernovae and Its Implications for Dark Energy
31/03/2023, 13:20
Presentation
Oral presentation

Type Ia supernovae have played a significant role in measuring the acceleration of the Universe's expansion and the existence of dark energy. However, understanding the nature of the supernovae and the impact of population, originating from two distinct progenitor channels (single- and double-degenerate), changes over cosmic time is crucial to accurately measuring these phenomena. In this...
3. Effective bond theory for frustrated magnets
31/03/2023, 13:40
Presentation
Oral presentation

Frustrated magnets are a class of materials where competing interactions between magnetic moments leads to complex behavior. As this complex behavior emerges from relatively simple rules, studying these materials can give us insight into how competing interactions can lead to the plethora of phenomena we see in strongly correlated materials, as well as insight into the nature of magnetic...
5. Structural properties of kagome-layered crystals
31/03/2023, 14:20
Presentation
Oral presentation

Recently, a family of kagome metals, AV3Sb5, has been synthesized and found to display superconductivity at low temperatures. Before the onset of superconductivity, a new phase appears at which the material seems to undergo a structural transition which causes the unit cell to double in size. Evidence has been found suggesting that this phase transition is not just a normal structural...
18. Classifying the first large clean neutrino sample in real data from the IceCube Neutrino Observatory using a Graph Neural Network
31/03/2023, 14:40
Presentation
Oral presentation

The IceCube Neutrino Observatory (IceCube) uses a cubic kilometre of the Antarctic ice sheet to detect neutrinos. IceCube carries out neutrino oscillation measurements using atmospheric neutrinos. Furthermore, it contributes to multi-messenger astronomy, searching for the extragalactic origins of neutrinos. All this interesting research relies on accurate neutrino classification and...
1. Spectral Integrability In Twisted N = 4 Super Yang-Mills Theory
31/03/2023, 15:00
Presentation
Oral presentation

$\mathcal{N}=4$ Super Yang-Mills theory has been hailed as the "hydrogen atom of the 21st century", owing to it's similarity to Quantum Chromodynamics (QCD) albeit with much larger symmetry allowing for simplification of otherwise extremely difficult computations.
The model is believed to be "Integrable", meaning that it is well behaved and solveable to all orders in pertubation theory,...
13. Mechanisms behind Induced Polarization Effects in Water and Brines Confined in Clay Minerals Oriented Films
31/03/2023, 15:20
Presentation
Oral presentation

The dynamic behavior of water molecules in soils has been extensively studied throughout the years and the understanding of the diffusion processes that occur are of primary importance especially when it comes to waste manage- ment. The main goal of this master project is to study how water molecules confined in clay minerals are moving regarding to salinity and how an electric field...
12. A Forward Hadronic Calorimeter for ALICE at the LHC
31/03/2023, 15:40

Studying the gluon density in nucleons and nuclei require measurements at low-x. The Forward Calorimeter (FoCal) upgrade for ALICE will provide just such measurements. FoCal comprises two components, an Electromagnetic calorimeter (FoCal-E) and a Hadronic Calorimeter (FoCal-H). This poster will present results from the first prototype that informed the design of the second prototype.
In...
8. Alternative to Cosmological Constant with new dark matter force
31/03/2023, 15:40

Proposing a new theory based on hierarchical structure formation of dark matter adding a new velocity dependent force which replaces the cosmological constant
17. Complex organic chemistry toward young stars
31/03/2023, 15:40

The origin of life remains a fundamental question in many scientific fields. From an astrochemical perspective a key element to understanding this question is through the formation and evolution of complex organic molecules (COMs) as they are thought to constitute the precursor for the building blocks of life. Methanol (CH$_3$OH) is one of many COMs detected in the interstellar medium and is...
2. Detailed simulation of neutron scattering from phonons in highly oriented pyrolytic graphite
31/03/2023, 15:40

Pyrolytic graphite (PG) is often used in neutron instruments, for example much PG is used in the multiplexing indirect Time-of-flight (ToF) spectrometer BIFROST at ESS. To simulate possible background effects of PG, experiments and modeling of the experimental data by the simulation package McStas have been done.

In this poster I will present the progress of modeling of the phonon in PG...
7. Dust circulation in self-similar protoplanetary discs
31/03/2023, 15:40

Planetary formation presents many unanswered questions which are very difficult to answer, observationally since they are deeply embedded, theoretically due to the very nonlinear dynamics and computationally due to the hundreds of thousands of orbits over which the formation occurs. Current models of the early solar system have difficulties explaining the existence of dust reservoirs observed...
16. Greenland ice sheet surface water vapour fluxes from automatic weather station records
31/03/2023, 15:40

The mass balance of the Greenland ice sheet is influenced by surface water vapour fluxes. Sublimation and evaporation remove mass from the surface, while condensation and frost deposition adds mass. The energy spent on sublimation and evaporation cools the surface and thus reduces melting, whereas frost deposition and condensation will have the opposite effect. Box and Steffen (2001) estimated...
19. On-chip Frequency Conversion with a GaAs platform
31/03/2023, 15:40

Frequency conversion is a well studied effect of nonlinear optics, in which the nonlinear dielectric polarization of a material describes the response to an incident optical field. The result is the generation of new secondary fields of different frequencies, enabling a variety of applications. For instance, in the field of quantum communication it is used to produce entangled photon pairs...
15. Probe a small droplet of Quark-Gluon Plasma with flow-vector fluctuations at the LHC
31/03/2023, 15:40

In the early universe, a special state of matter called quark-gluon plasma (QGP) existed. It consisted of the fundamental matter particles (quarks) and the force carriers of the strong interaction (gluons). By colliding heavy-ions at ultrarelativistic energies using the Large Hadron Collider (LHC) at CERN, we can recreate the early universe in a little "Little Bang" and study it under...
11. Probing nuclear structure in heavy-ion collisions with cumulants of transverse momentum fluctuations
31/03/2023, 15:40

The structure of atomic nuclei can be described by a multipole expansion of the parton distribution function. Most nuclies generally have intrinsic deformation, where the quadrupole moment carries the most significant contribution. The shape of a quadrupole deformed nuclies is described by the deformation strength $\beta_2$, and an axial symmetry component $\gamma$. In ultra-relativistic...
20. Reading out a hadronic calorimeter: testning a readout system for the ALICE FoCal-H
31/03/2023, 15:40

One of the major upgrades to ALICE for LHC Run 4 is the Forward Calorimeter (FoCal). This calorimeter comprises two sections, an Electromagnetic Calorimeter (FoCal-E) and a Hadronic Calorimeter (FoCal-H). Among the physics goals for FoCal is the study of physics at low-x, a regime in which one expects to see signals related to the gluon density in the initial nucleons which form the initial...
14. Simulating the vibrational dynamics of molecules using a quantum dot induced non-linearity
31/03/2023, 15:40

We aim to develop quantum algorithms that can effectively simulate molecular vibrational dynamics. While simulating quantum dynamics using classical algorithms is trivial for systems approximated as harmonic oscillators, challenges arise when dealing with molecules containing anharmonicity, such as H2O. To overcome this challenge, we propose mapping molecular vibrations to photons and...
4. Simulations of background scattering from a 15 T magnet
31/03/2023, 15:40

Neutron scattering allows for quite complicated sample environments with control over the sample conditions, such as controlled temperature, as well as the presence of strong magnetic fields.
The presence of magnets in scattering experiments necessitates a significant amount of materials in the structure. The coils of the magnets, which are not in the direct beam, add more material into the...
9. Spacetime Algebra as a tool to study the Milky Way's plane of satellites
31/03/2023, 15:40

A new gravitational force term derived from Spacetime Algebra is numerically implemented in order to explain the Milky Way's plane of dwarf galaxies.
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