Volodymyr Vovchenko

🇺🇦 Theoretical Physicist, faculty at @UHouston, @BerkeleyLab affiliate, alum @UW, @fias_science and @goetheuni. Building

[Volodymyr Vovchenko @vlvovch]

Update on @PlaceTally
Working demo available at https://t.co/h6UZg1dIos
Used it to track my recent four-workshop tour from Texas through Colorado (first time for me!) and California, with a 40°C temperature swing 🥶☀️

[Volodymyr Vovchenko @vlvovch]

A large portion of v1.6 was developed with AI as coding partner (@AnthropicAI Claude Code, @OpenAI Codex). In particular, the entire WebAssembly port (Emscripten/Qt6 build, Docker deployment) done through AI-assisted workflow. A paradigm shift for scientific software development.

[Volodymyr Vovchenko @vlvovch]

🚀 Thermal-FIST v1.6 is out — now running directly in your browser (WebAssembly).

New: PDG2025 particle lists, improved low-T numerics, effective mass model. Most of v1.6 was built with AI (Claude Code, Codex) as coding partner.

Try it: https://t.co/wpYDJ0PYAm

[Volodymyr Vovchenko @vlvovch]

@oxurieal Good idea

[Volodymyr Vovchenko @vlvovch]

🗺️I've been tracking my travels in spreadsheets for years. Turning it into an app, as a side project between physics research

PlaceTally — track where you've been, see your travel stats, and visualize it all on a map.

Launching soon. Preview: https://t.co/h6UZg1ege0

[Volodymyr Vovchenko @vlvovch]

It's the end of the semester! After teaching PHYS 6350 Computational Physics at UH in Spring 2023 and again in 2025, I compiled and published the course materials as an open-access Jupyter Book: https://t.co/Wxk5rSoUhZ

GitHub repo: https://t.co/2BwxxieVJb

[Volodymyr Vovchenko @vlvovch]

Happy to publish a PRC Letter on a new formalism for studying fluctuations and correlations of conserved charges in heavy-ion collisions, finally allowing one to explore the local charge conservation effect on cumulants. Stay tuned for new applications!

[Volodymyr Vovchenko @vlvovch]

Excited to talk about this work at tomorrow's RHIC-BES Seminar! https://t.co/ace48bpdyj

[Claudia Ratti @ClaudiaRatti]

New paper! We propose a new method to locate the QCD critical point from first principles & predict its location based on available lattice QCD results! With my student @HitanshShah17, colleague @vlvovch & collaborators @JorgeNoronha13 and Mauricio Hippert https://t.co/iI9Z5q7ryL

[Claudia Ratti @ClaudiaRatti]

My day starts with a MUSES collaboration talk on Quarkyonic transition for heavy-ion collisions and neutron stars by Roman Poberezhniuk, postdoc at the University of Houston in the group of @vlvovch

[Claudia Ratti @ClaudiaRatti]

New paper! We compare the convergence properties of Taylor vs T'-expansion, when expanding the EoS of several models to finite density. With my student @kahangirw, my colleague @vlvovch, @NuSteam colleague Jorge Muñoz and @NuSteam undergrad Irene Gonzalez https://t.co/77PBtkhLAs

[Volodymyr Vovchenko @vlvovch]

Our latest work, published in PRC as an Editors' Suggestion, explores the tantalizing possibility that the ground state of nuclear matter may, in fact, be quarkyonic. The quark Pauli exclusion principle and momentum shell structure provide the repulsion needed for saturation.

[Volodymyr Vovchenko @vlvovch]

First foray into the magnetic field, which is now part of FIST

[Nuclear Theory Papers @Nuculear]

Magnetic field effect on hadron yield ratios and fluctuations in hadron resonance gas. https://t.co/k4NAvZoLeA

[Claudia Ratti @ClaudiaRatti]

We are looking for postdocs! My colleague Dr. Volodymyr Vovchenko @vlvovch and myself have two nuclear theory postdoctoral positions available at the University of Houston, starting in the summer or fall of 2024. Come and work with us! To apply: https://t.co/IzwtsjnVfU

[Dennis V. Perepelitsa 🇺🇦🇺🇲 @profdvp]

Excellent talks by young plenary speakers at @qm2023 today!

🎇 @yuuka_kanakubo - theoretical overview of collective dynamics

��� @vlvovch - criticality in QCD at finite temperature and density

[FIAS @fias_science]

FIAS hosted seven Ukrainian researchers after the attack on their country last year. How are they doing today? Read their impressive reports from Frankfurt, Kyiv, USA: https://t.co/2Bzmldn8Zj

[Volodymyr Vovchenko @vlvovch]

Extending the quantum van der Waals equation with quarks -- an appealing task on its own -- is achieved in our new work, indicating that a quarkyonic type matter may emerge at around twice the normal nuclear density and reachable in heavy-ion collisions.

https://t.co/OIUb8a7ucT

[Volodymyr Vovchenko @vlvovch]

Always great to visit Frankfurt and @fias_science to see many friends and colleagues, as well as to continue and establish new collaborations

[Volodymyr Vovchenko @vlvovch]

The study was performed in the framework of Chiral Mean Field model through a collaborative effort with groups in Bhubaneswar/Kolkata and Frankfurt, and motivated by the finite system size of QCD matter created in heavy-ion collisions.

[Volodymyr Vovchenko @vlvovch]

In our recent paper, we explore the effects of a finite volume of QCD matter on the equation of state near the chiral transition. Sizable influence is observed for the speed of sound and (high-order) susceptibilities of conserved charges.

https://t.co/iZ2NeLsuyr

[Volodymyr Vovchenko @vlvovch]

The final version is now published in Physics Letters B!

[Volodymyr Vovchenko @vlvovch]

Our exploration of quarkyonic matter ends up in baryquark matter instead. The momentum space shell structure of a quark-hadron mixture has baryons in the Fermi sea instead of quarks, and it turns out to be energetically favored. More details in the new preprint!

[arXiv nucl-th @_arXiv_nucl_th]

[2211.14674] Volker Koch, Volodymyr Vovchenko: Quarkyonic or baryquark matter? On the dynamical generation of momentum space shell structure https://t.co/C8YkFwWcTZ https://t.co/VolDc5RO87