About
Experience & Education
Volunteer Experience
-
Student Co-President
Cambridge University Real Tennis Club
- Present 5 years
• Organised local and national tournaments with up to 60 players encouraging student participation in real tennis. Developed systems
for managing tournament draws with complex availability requirements. Engaged with sponsors to provide new financial support
• Recruited new players and assisted club professionals running introduction and taster sessions. Worked with club committee to retain
and expand student membership -
Treasurer
Gates Scholars Council
- 2 years
Education
Managed £83k p.a. budget for promoting student‑led events. Negotiated funding allocations between sponsorship body and student
council officeholders. Collaborated with committee members to ensure value‑for‑money, and provided guidance on organising events
• Developed and oversaw policy on distributing small grants to student applicants for coordinating social, charity and academic events -
Orientation Co-Director
Gates Cambridge Trust
- less than a year
Education
• Organised 5 day induction and orientation for over 100 new international students. Worked with fellow co‑director, organising committee,
Scholars Council, returning scholars and Gates Cambridge Trust. Managed £35k budget.
• Aided new scholars in their arrival in the UK and encouraged integration with the existing scholar community -
Captain, Player
Darwin College Cricket Club
- Present 7 years
• Managed squad of players of varying abilities and arranged trainings and matches. Captained team during matches, winning Graduate
League in 2019. Maintained database of match statistics -
Panel Member
Beacon of Learning & Teaching Taskforce, University of Adelaide
- less than a year
• Panel developing the 10‑year strategic plan for teaching policy at the university. Represented the student body in development of small
group learning experiences -
Refounder, President, Treasurer
Adelaide University Sciences Association (AUScA)
- 2 years
• Restarted student club to build a community amongst science students. Grew club to a membership of several hundred students and
initiated new social events. Trained next generation of committee members who have continued the club to today
• Built relationships with the Faculty of Sciences to open opportunities for student volunteering
Publications
-
Effective field theory analysis of composite higgsino-like and wino-like thermal relic dark matter
arXiv:2011.06025
Abstract: We study the effective field theory (including operators up to dimension five) of models in which dark matter is composite, consisting of either an electroweak doublet Dirac fermion (`higgsino-like dark matter') or an electroweak triplet Majorana fermion (`wino-like dark matter'). Some of the dimension-five operators in the former case cause mass splittings between the neutralino and chargino states, leading to a depleted rate of coannihilations and viable thermal relic dark matter…
Abstract: We study the effective field theory (including operators up to dimension five) of models in which dark matter is composite, consisting of either an electroweak doublet Dirac fermion (`higgsino-like dark matter') or an electroweak triplet Majorana fermion (`wino-like dark matter'). Some of the dimension-five operators in the former case cause mass splittings between the neutralino and chargino states, leading to a depleted rate of coannihilations and viable thermal relic dark matter with masses of the order of tens to hundreds of GeV rather than the usual pure higgsino thermal relic mass of 1 TeV. No such effects are found in the latter case (where the usual thermal relic mass is 3 TeV). Other operators, present for both wino- and higgsino-like dark matter, correspond to inelastic electromagnetic dipole moment interactions and annihilation through these can lead to viable models with dark matter masses up by an order of magnitude compared to the usual values.
-
Effect of electromagnetic dipole dark matter on energy transport in the solar interior
Preprint (ArXiv)
Abstract: In recent years, a revised set of solar abundances has led to a discrepancy in the sound-speed profile between helioseismology and theoretical solar models. Conventional solutions require additional mechanisms for energy transport within the Sun. Vincent et al. have recently suggested that dark matter with a momentum or velocity dependent cross section could provide a solution. In this work, we consider three models of dark matter with such cross sections and their effect on the…
Abstract: In recent years, a revised set of solar abundances has led to a discrepancy in the sound-speed profile between helioseismology and theoretical solar models. Conventional solutions require additional mechanisms for energy transport within the Sun. Vincent et al. have recently suggested that dark matter with a momentum or velocity dependent cross section could provide a solution. In this work, we consider three models of dark matter with such cross sections and their effect on the stellar structure. In particular, the three models incorporate dark matter particles interacting through an electromagnetic dipole moment: an electric dipole, a magnetic dipole or an anapole. Each model is implemented in the \texttt{DarkStec} stellar evolution program, which incorporates the effects of dark matter capture and heat transport within the solar interior. We show that dark matter with an anapole moment of ∼1GeV−2 or magnetic dipole moment of ∼10−3μp can improve the sound-speed profile, small frequency separations and convective zone radius with respect to the Standard Solar Model. However, the required dipole moments are strongly excluded by direct detection experiments.
Other authors
Honors & Awards
-
Cambridge Australia Honourary Scholarship
Cambridge Trust
-
Gates Cambridge Scholarship
Gates Cambridge Foundation
Full cost prestigious international scholarship.
See: https://www.gatescambridge.org/members-area/connect/directory/scholar/9592 -
Cambridge Australia Bragg Scholarship
Cambridge Trust
Rescinded, offer superseded by Gates Cambridge Scholarship
-
Cambridge International Scholarship
Cambridge Trust
Rescinded, offer superseded by Cambridge Australia Bragg Scholarship
-
H S Green Prize
School of Physical Sciences
Awarded annually to the student in theoretical physics at the examination for the Honours Degree of Bachelor of Science or the Honours Degree of Bachelor of Science (High Performance Computational Physics) who is placed highest in the first class.
-
Bragg Silver Medal
Australian Institute of Physics
-
The Angus Hurst Prize
University of Adelaide
Awarded annually to the student majoring in Theoretical Physics with the highest grade point average in Level III Physics courses contributing to the major. Students will be considered for the Prize in the year they satisfy the requirements for a major in Theoretical Physics.
-
The Frank Jacka Memorial Prize
The University of Adelaide
Awarded annually to the student majoring in Physics with the highest grade point average in Level III laboratory-based experimental courses contributing to the major. Students will be considered for the Prize in the year they satisfy the requirements for a major in Physics.
-
Centre of Excellence in Particle Physics Scholarship 2015
Centre of Excellence in Particle Physics
-
David Murray Prize in Science
University of Adelaide
-
Faculty of Sciences Outstanding Academic Achievement Award 2014
University of Adelaide
-
Faculty of Sciences Oustanding Academic Achievement Award 2012
University of Adelaide
-
University of Adelaide Principal's Scholarship
University of Adelaide
Languages
-
English
Native or bilingual proficiency
Organizations
-
Adelaide University Sciences Association
President, Treasurer
- Present
Other similar profiles
Explore collaborative articles
We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
Explore MoreOthers named Ben Geytenbeek
1 other named Ben Geytenbeek is on LinkedIn
See others named Ben Geytenbeek