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Welcome to my website! Here, I will briefly tell you about myself, share my scientific and non-scientific interests and present some of my works. Don't forget to check out my Log of Resilience and below you can find my recent notes and publications!

My recent notes

In Grand Scheme of Things... Everything is the Same.

Thinking big and small are part of our everyday lives. When a pandemic hits the world, we worry about macroeconomic factors and how they might affect our livelihoods and those of others. However, when we wake up, we not only go
through morning routines but also start thinking about what’s going to happen next. What to wear today? Is there traffic on the way to work? How creative do we become in our responses to these questions?

How we think about these things depends on how abstractly or concretely we think. In this post, I refer to a simple mathematical model which demonstrates how mental coarse-graining impacts models we build to describe the world around us. While the extent of abstraction of conceptualizations play important role in strategy, we see that this has been tackled by many disciplines ranging from economics to physics.

Technical and Social Perspectives on Covid-19 - Part 1

The Covid-19 pandemic is clearly a world-wide phenomenon which can be observed and studied from so many different ways. We have seen many opinions and analyses on its economic impact, on its biological properties, on its impact on digitization, even on the future of society given the technological developments enabling political actions once considered to be illegitimate.

In this series of posts, I want to highlight some of the questions or remarks that I had in mind while watching the rise of this pandemic, and listening to people around me and on the internet. Clearly, this pandemic induces much worry about our family, friends, and all other individuals (e.g. ranging from potential loss of job to death). Without implying any underestimation of these considerations, I would like to use this platform to elaborate on some other technical and scientific questions which arise from our situation.

New Investor In Town: ICOs and the Decentralized Anonymous Crowd

In a recent conversation with two cryptocurrency traders, I asked how they figure out which Initial Coin Offering (ICO) makes sense. Their answer came without hesitation: “You don’t know.” As it is not a satisfying answer, I further asked how they decide in which ICO to invest. Next to the fact that it is more or less a “hit or miss”, for them one of the most important factors was the affiliations of the start up founders. In an online article[1], Bernard Moon, co-founder and partner at SparkLabs, states that “early-stage startup investing hasn’t changed. Investment approach and what active angels and venture capitalists look for in startups haven’t changed, so why should it change for cryptocurrency investors?” While the author says that it’s the “target audience of investors” that has changed, a closer look into academic research in management and behavioral finance might uncover some other intricacies of ICOs. The following papers uncover some social and organizational mechanisms in the venture capital world. As we will see, even though finance is theoretically all about numbers, in reality the survival of the entrepreneurs, angels and investors in general are inseparable from social dynamics, if not dependent on it.

 

[1] https://www.forbes.com/sites/sparklabs/2017/12/05/dont-be-dumb-money-how-to-invest-in-icos-and-blockchain-startups/#3d1009627c74

My recent publications

Hydrodynamics frameworks allows us to describe collective behaviors of particles independent of their microscopic properties. A fluid consisting of electrons can be described with this framework, just like the flow of water and many other fluids can be described without detailed deeper understanding of the underlying interactions. However, this framework has its limitations and for electrons, it is the point where the quantum effects start to become effective and interaction between the electrons become rare; a point which we call transition from hydrodynamic to ballistic flow. While ballistic flow was shown to be the ultimate highest conductivity that electrons can achieve in a material by avoiding collisions with each other, we show in this work that hydrodynamic conductivity actually achieves even higher values due to the "cooperative" nature emerging through interactions. 

In this work, we bring Computational Fluid Dynamics (CFD) and General Relativity (GR) together. In a certain form, the equations that describe gravity are conservation equations, which are the fundamentals of fluid dynamics. While in fluid dynamics the conserved quantities are real (such as particles, momentum and energy), the conservation equations found in GR are completely abstract and do not necessarily imply that the fundamentals of GR is lying in fluid dynamics. However, this mathematical similarity allows us to use a numerical technique developed in CFD, namely Lattice Boltzmann, to solve the equations governing the nature of gravity and describe gravitational phenomena such as gravitational waves, gravity fields of neutron stars and dynamics black holes.